29

编写一段以字符串为输入的代码，并以运行时输出初始输入字符串的相同语言输出一段代码。

它必须能够处理字符AZ，az和0-9的任意组合。

Python中的示例：

import sys
print "print('" + sys.argv[1]  + "')"

给定输入testing123，它将返回print('testing123')。

由于这是代码高尔夫，因此以字节为单位的最短答案将获胜。

code-golf code-generation

— 石英的
source

可以是功能吗？

— 完全人类

@manatwork（S）他刚刚编辑了它。

— NoOneIsHere

必须输入字符串吗？还是可以是整数？

— 毛茸茸的

必须能够处理整数和字符串输入。

— 石英

2

我们可以根据meta上的默认值输出函数吗？

— JAD

28

pl，0字节

码：

在线尝试！

说明：

pl中的空程序只是cat程序，其输出与输入完全相同。

在pl中，所有ASCII字符本质上都是变量，但是当变量不存在（尚未）时，pl假定它们是字符串的一部分。

— 阿德南
source

3

我知道有一门这样的语言，虽然找不到：(

— Stephen

2

同样，请参阅Cat，这是一种解释性语言，例如Python。大多数现代Linux发行版均附带cat解释器。;）

— Quuxplusone

1

如果您认为输入要附加到程序源代码之后，此解决方案也适用///（因为///没有输入机制）。///是许多语言（我认为）中的一种，其中仅输出程序开头的字母数字字符。

— Tanner Swett

6

您可以发布非高尔夫版本吗？;）

— maxathousand

17

Brainfuck，56 55 33字节

感谢Gravitron节省了1个字节，感谢Jo King节省了22个字节！

--[>+<++++++],[[->.<]>+++.--.-<,]

在线尝试！

输出需要包装内存下溢且EOI = 0的解释器。TIO有这样的解释器。

说明

--[>+<++++++] 一次初始化磁带 +。

输入循环：

,[[->.<]>+++.--.-<,]
,                     take input
 [                ,]  while input is nonzero:
  [->.<]                  output `+` input times
        >+++.             output `.` (`+` + 3)
             --.          output `,` (`.` - 2)
                -<        restore `+` and move back to input

其他解决方案

每条线都是其自己的解决方案。

+++[>+++++<-]>[>++++>+++<<-]>>-->,[[-<.>]<+++.---<.>>,]
--[>+<++++++],[[->.<]>+++.++++++++++++++++.-------------------<,]
++++++++++[>++++++>++++>++++<<<-]>>+++>++++++>,[[-<<.>>]<.<<.>>>,]
++++++++++[>++++++>++++>++++<<<-]>++>+++>++++++>,[[-<<.>>]<.<<.>>>,]

— 科纳·奥布莱恩
source

1

+1。我不了解Brainfuck，但我无法想象尝试用它来解决这样的问题。

— 雅各布

您可以通过更换节省1个字节+++++++++++++++有+++[>+++++<-]>（从brainfuck常数）

— 引力

@Graviton哦，太好了，谢谢

— Conor O'Brien

您没有在说明中替换它

— Destructible Lemon'Aug

4

你不懂脑操吗？我将在一条评论中教您！我们从的磁带开始0，带有指向值的指针。+增量值，-递减值，>移动指针向右，<移动指针左，,读取输入到指针作为ASCII字符，.输出该指针作为ASCII字符的值，[开始一个循环，并且]跳转到对应[如果指针的值不是0。我不好解释，但这就是Brainfuck多么容易。还有不错的科诺尔高尔夫！

— 扎卡里

13

莫宁顿月牙，27640字节

Take Northern Line to Moorgate
Take Circle Line to Moorgate
Take Circle Line to Westminster
Take Circle Line to Hammersmith
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Barbican
Take Circle Line to Victoria
Take Circle Line to Victoria
Take Victoria Line to Seven Sisters
Take Victoria Line to Victoria
Take Circle Line to Victoria
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Bayswater
Take District Line to Barons Court
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to Cannon Street
Take Circle Line to Moorgate
Take Circle Line to Hammersmith
Take Circle Line to Cannon Street
Take Circle Line to Hammersmith
Take Circle Line to Cannon Street
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Mile End
Take District Line to Barking
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Bank
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Bakerloo Line to Paddington
Take Circle Line to Royal Oak
Take Circle Line to Tower Hill
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Bank
Take Circle Line to Baker Street
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Baker Street
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Liverpool Street
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take District Line to Gunnersbury
Take District Line to Upminster
Take District Line to East Ham
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Sloane Square
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take Circle Line to Cannon Street
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to East Ham
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Plaistow
Take District Line to Mile End
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take District Line to Barking
Take District Line to Bank
Take District Line to Barking
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Wood Lane
Take Circle Line to Liverpool Street
Take Circle Line to Bank
Take Circle Line to Liverpool Street
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take District Line to Barking
Take District Line to Bank
Take District Line to Barking
Take District Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Dagenham East
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Victoria
Take Circle Line to Bank
Take Circle Line to Victoria
Take Circle Line to Hammersmith
Take District Line to Mile End
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Upminster
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Victoria
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take District Line to Elm Park
Take District Line to Bank
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Bank
Take Central Line to Northolt
Take Central Line to Bank
Take Circle Line to Bank
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Barons Court
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Wimbledon
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Mile End
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Baker Street
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Bakerloo Line to Waterloo
Take Northern Line to Bank
Take Circle Line to Bank
Take Central Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Blackfriars
Take Circle Line to Bank
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Paddington
Take Circle Line to Bank
Take Circle Line to Victoria
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Victoria
Take Circle Line to Wood Lane
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take Circle Line to Paddington
Take Circle Line to Victoria
Take Circle Line to Victoria
Take Victoria Line to Euston
Take Victoria Line to Victoria
Take Circle Line to Victoria
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Wood Lane
Take Circle Line to Paddington
Take Circle Line to Bank
Take Central Line to Northolt
Take Central Line to Bank
Take District Line to Southfields
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Baker Street
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Upminster
Take District Line to Ravenscourt Park
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take District Line to Upminster
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Bank
Take Northern Line to Old Street
Take Northern Line to Bank
Take Circle Line to Bank
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take District Line to Mile End
Take Central Line to Theydon Bois
Take Central Line to Mile End
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Bank
Take Northern Line to Old Street
Take Northern Line to Bank
Take Circle Line to Bank
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Acton Town
Take Piccadilly Line to Cockfosters
Take Piccadilly Line to Acton Town
Take District Line to Acton Town
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Wood Lane
Take Circle Line to Paddington
Take Circle Line to Wood Lane
Take Circle Line to Bank
Take District Line to Elm Park
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bayswater
Take Circle Line to Paddington
Take Circle Line to Bayswater
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bayswater
Take Circle Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bayswater
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bayswater
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Barbican
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Barbican
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to East Ham
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take District Line to Elm Park
Take District Line to Bank
Take Central Line to Chancery Lane
Take Central Line to Bank
Take Circle Line to Bank
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Bank
Take District Line to Plaistow
Take District Line to Bank
Take Circle Line to Hammersmith
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Bank
Take Circle Line to Farringdon
Take Circle Line to Bank
Take Circle Line to Bank
Take Central Line to Mile End
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Bank
Take Northern Line to Brent Cross
Take Northern Line to Bank
Take Circle Line to Bank
Take Central Line to Mile End
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take Circle Line to Notting Hill Gate
Take Circle Line to Notting Hill Gate
Take District Line to Upminster
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Farringdon
Take Circle Line to Bank
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Farringdon
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Farringdon
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Southfields
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take District Line to Elm Park
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to Elm Park
Take District Line to Paddington
Take Circle Line to Blackfriars
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Royal Oak
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to Barons Court
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Blackfriars
Take Circle Line to Paddington
Take Circle Line to Blackfriars
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Royal Oak
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Farringdon
Take Circle Line to Paddington
Take Circle Line to Paddington
Take District Line to Southfields
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Embankment
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to East Ham
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take District Line to East Ham
Take District Line to Bank
Take District Line to Barking
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Barbican
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to West Ham
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take District Line to Barons Court
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Victoria
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Wood Lane
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Aldgate
Take Circle Line to Paddington
Take Circle Line to Aldgate
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take District Line to Barking
Take District Line to Paddington
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to Barking
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Moorgate
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Central Line to Chancery Lane
Take Central Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take District Line to Barking
Take District Line to Paddington
Take Circle Line to Westminster
Take Circle Line to Paddington
Take District Line to Plaistow
Take District Line to Bank
Take Circle Line to Moorgate
Take Circle Line to Hammersmith
Take Circle Line to Bank
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Bank
Take Circle Line to Paddington
Take Circle Line to Westminster
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Aldgate
Take Circle Line to Temple
Take Circle Line to Hammersmith
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Bank
Take Circle Line to Westminster
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Bank
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Tower Hill
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take Circle Line to Notting Hill Gate
Take Circle Line to Notting Hill Gate
Take District Line to Upminster
Take District Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Temple
Take Circle Line to Bank
Take Circle Line to Bayswater
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Bayswater
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take Circle Line to Notting Hill Gate
Take Circle Line to Notting Hill Gate
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Embankment
Take Circle Line to Hammersmith
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Embankment
Take Northern Line to Angel
Take Northern Line to Bank
Take Central Line to Marble Arch
Take Central Line to Bank
Take Circle Line to Bank
Take Circle Line to Westminster
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Mile End
Take Central Line to Bank
Take Circle Line to Bank
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Tower Hill
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take Circle Line to Notting Hill Gate
Take Circle Line to Notting Hill Gate
Take District Line to Upminster
Take District Line to Embankment
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Piccadilly Line to Bounds Green
Take Piccadilly Line to Hammersmith
Take Circle Line to Embankment
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Cannon Street
Take Circle Line to Hammersmith
Take Circle Line to Cannon Street
Take District Line to Acton Town
Take District Line to Acton Town
Take Piccadilly Line to Bounds Green
Take Piccadilly Line to Holborn
Take Central Line to Holborn
Take Central Line to Bank
Take Circle Line to Hammersmith
Take District Line to West Ham
Take District Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Aldgate
Take Metropolitan Line to Chalfont & Latimer
Take Metropolitan Line to King's Cross St. Pancras
Take Victoria Line to Seven Sisters
Take Victoria Line to Euston
Take Victoria Line to Euston
Take Northern Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Stepney Green
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Stepney Green
Take Hammersmith & City Line to Moorgate
Take Circle Line to Moorgate
Take Metropolitan Line to Chalfont & Latimer
Take Metropolitan Line to Moorgate
Take Circle Line to Moorgate
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Upminster
Take District Line to Bank
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take Piccadilly Line to Russell Square
Take Piccadilly Line to Russell Square
Take Piccadilly Line to Acton Town
Take District Line to Acton Town
Take District Line to Bank
Take Circle Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Bank
Take District Line to East Ham
Take District Line to Bank
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take District Line to East Ham
Take District Line to Tower Hill
Take Circle Line to Bank
Take District Line to West Ham
Take District Line to Bank
Take Circle Line to Bank
Take Northern Line to Angel
Take Northern Line to Bank
Take Circle Line to Moorgate
Take Circle Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Barbican
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Moorgate
Take Circle Line to Bank
Take Northern Line to Morden
Take Northern Line to Bank
Take Circle Line to Bank
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Victoria
Take Victoria Line to Seven Sisters
Take Victoria Line to Victoria
Take Circle Line to Victoria
Take District Line to Mile End
Take District Line to Embankment
Take Northern Line to Kennington
Take Northern Line to Bank
Take Circle Line to Bank
Take Central Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Liverpool Street
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Aldgate
Take Metropolitan Line to Croxley
Take Metropolitan Line to Aldgate
Take Circle Line to Aldgate
Take Circle Line to Bank
Take Circle Line to Bank
Take District Line to Gunnersbury
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take District Line to Gunnersbury
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to West Brompton
Take District Line to Gunnersbury
Take District Line to Mile End
Take District Line to Acton Town
Take District Line to Mile End
Take District Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Victoria
Take Victoria Line to Seven Sisters
Take Victoria Line to Victoria
Take Circle Line to Victoria
Take District Line to Mile End
Take District Line to Acton Town
Take District Line to Acton Town
Take Piccadilly Line to Hounslow Central
Take Piccadilly Line to Acton Town
Take District Line to Acton Town
Take District Line to Mile End
Take District Line to Gunnersbury
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Gunnersbury
Take District Line to Paddington
Take Circle Line to Bank
Take Circle Line to Bank
Take Northern Line to Mornington Crescent

在线尝试！

说明

首先，对Mornington Crescent进行快速回顾：

每个工作站可以容纳任意长度的字符串或bigint
还有一个累加器，里面也有一个字符串或一个bigint
所有站点都以自己的名字开头
一开始，累加器包含了程序的输入
每次您去某个站点时，站点的值和累加器都会交换
一些工作站很特殊，可以覆盖此行为
您用来到达车站的线路没关系
你从Mornington Crescent开始
要结束该程序，您也可以去Mornington Crescent
最后，打印累加器的值

由于打印字符串很困难（请参阅Martin Ender的Mornington Crescent“ Hello，World！”程序），我们将需要一个可用于输出通用字符串的简单模板。由于生成程序的长度无关紧要，因此我决定这样做：

Take Northern Line to Bank
Take Northern Line to Bank
Take District Line to Paddington

我们需要分别生成每个字符并将它们连接起来，因为在一般情况下，Martin使用的子字符串方法要难得多。Paddington是执行字符串连接的工作站。当您到达帕丁顿时，会发生以下情况：

accumulator, paddington = paddington + accumulator, accumulator

此行为用于将Paddington初始化为假定为输入的空字符串。

Take District Line to Victoria
Take Victoria Line to Seven Sisters
Take Victoria Line to Euston
Take Victoria Line to Euston
Take Northern Line to Bank

转到将七个累加器设置为7的七个姐妹，并将其存储在银行中。银行是复制价值的唯一方法-哈默史密斯是银行价值的只读副本。

Take District Line to Hammersmith
Take District Line to Cannon Street
Take District Line to Hammersmith
Take District Line to Cannon Street
Take District Line to Bank

用7除以7得到1，这是我们需要支持的所有ASCII值的除数。

Take District Line to Hammersmith
Take District Line to Upminster

对于每个字符，首先将1复制到Upminster。

Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster
Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Upminster

根据需要添加更多的。

Take District Line to Hammersmith
Take District Line to Upminster
Take District Line to Bank
Take District Line to Bank
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Bakerloo Line to Paddington
Take Bakerloo Line to Paddington
Take Bakerloo Line to Charing Cross
Take Northern Line to Embankment

最后，只需进入Upminster一次，以将新值保留在累加器中，而不是再次存储它。将其带到Charing Cross将ASCII值转换为字符并将其附加到字符串。最后两行是在这里，因为我没有正确阅读规范，所以我将在这里停下来，先打高尔夫球。

— 尼捷科布
source

（免责声明：我刚刚学习过这种语言）关于我能想到的完全相同的方法（7/7 = 1）。但是，为什么不在程序开始时只设置一次Upminister？

— user202729

@ user202729那将如何工作？/有趣的事实：重复的Take District Line to Upminster行计算了斐波那契数列

— NieDzejkob '18

好像我误解了规范。但这就是那里所说的……有人需要编辑Wiki。

— user202729 '18

7

果冻，1字节

Ṿ

哇内置！

内置Ṿ取消输入的值。

在线尝试！

一个更有趣的：

⁾“”j

通过输入连接字符串““””。

在线尝试！

— 火烈鸟241
source

1

对于第二个，我认为您可以”“;为-1 做。

— 暴民埃里克（Erik the Outgolfer）'17年

7

木炭，1个字节

θ

默认情况下，一串ASCII字符..会~简单地打印自身，因此只保留打印输入。

— 尼尔
source

我打算添加相同的答案。:-)

— 查理（Charlie）

@CarlosAlejo好吧，好像没有一个不同的答案……

— Neil

2

那么有：P

— ASCII-仅

仅限@ASCII的Touché！

— 尼尔

6

C（gcc），89 87 58 56字节

感谢Jakob，节省了两个字节！

main(a,c)char**c;{printf("main(){puts(\"%s\");}",c[1]);}

在线尝试！

— 科纳·奥布莱恩
source

“它必须能够处理字符AZ，az和0-9的任何组合。” 毕竟，您可能想采用逃逸策略。

— 雅各布

@Jakob是的，我刚刚读过：/，谢谢

— Conor O'Brien

当我阅读该文章时，我还刚刚完成了针对Java解决方案的逃逸者正则表达式的编写。笨蛋

— 雅各布

@Jakob是的，对我来说一样，但是热情洋溢。RIP

— 科纳·奥布莱恩

您可以puts在打印程序中使用以节省2个字节，对吗？还是添加换行符是一个问题？

— 雅各布

5

Japt，2个字节

iQ

在线尝试！

i是在输入的指定索引处插入指定字符串的函数。Q是一个默认为引号的变量"，并且由于没有给出索引，因此默认为0。最终结果是在字符串的开头插入了一个引号，Japt在运行时会自动完成。

在包含任何东西，除了字符串这个作品"，{或者\，虽然当然的字符串是保证由字母数字字符的所以这并不重要。

— ETH生产
source

4

Python 2，22个字节

print'print%r'%input()

在线尝试！

— 全人类
source

2

另一种22字节的解决方案是print'print'+`input()`。

— notjagan

这行不通。input在Python 2中等效于eval(raw_input())。因此，它必须是pythonic表达式才能起作用。

— Zizouz212 '17

是的，那是允许的。---让我找到合适的元文件...--- 啊哈，找到它了。

— totallyhuman

4

21个字节

— LyricLy

4

MATLAB / 八度，15字节

@(t)['disp ',t]

在线尝试！

我完全忽略了一个事实，即程序只需要处理字母数字字符，或者，重要的是，它并不需要处理空格字符。这意味着我们可以使用“命令”语法，该语法使用更少的字节。

MATLAB，27个字节

为了完整起见，这是一个可以处理任意输入的版本：

@(t)['disp(',mat2str(t),41]

定义一个采用字符串的匿名函数t，并将其转换为程序。奇怪的是，这在Octave中不起作用，Octave似乎对应该做什么有不同的想法mat2str。

— 桑切斯
source

我无法对此进行测试，但是我认为：@(t)['disp ',mat2str(t)]应该可以...？

— Stewie Griffin

@StewieGriffin无效，因为mat2str添加了引号，这在命令语法中是不必要的。我结合使用了函数语法mat2str来处理输入中的空格，但是在重读挑战时，实际上没有必要，将字节数减少了近一半。谢谢！

— Sanchises

我认为如果输入中有空格，则必须使用引号，但是我可能错了。我也没注意到输入也只是字母数字...

— Stewie Griffin '18

像这样（脱胶）。

— Stewie Griffin '18

@StewieGriffin是的，我误判了命令语法的工作方式。但是，命令语法似乎充满了惊奇：在线尝试！

— 桑契斯

3

Befunge-98（FBBI），21 16 12字节

感谢NieDzejkob --5
个字节-感谢Jo King -4个字节

#,~'',,',,'@

在线尝试！

't,'e,'s,'t,@输入的输出test

怎么样？

最初，指针向东移动：

#,           # skips the next instruction
  ~          push a byte of input
   '',       push ' and print it
      ,      print the byte of input
       ',,   push , and print it 
          '@ push @ to the stack

如果没有更多输入，请~反转指针的方向：

 ,           print @
#            skip nothing
           @ terminate

— ovs
source

3

表情符号，88字节

🐖😍➡️🔡🍇🍎🍪🔤🏁🍇😀❌🔤🔤🐕🔤❌🔤🍉🔤🍪🍉

在线尝试！

输入：

anyString

输出：

🏁🍇😀🔤anyString🔤🍉

脚本输出：

anyString

— X1M4L
source

2

QBIC，7个字节

?@?@`+;

说明

?           PRINT on the screen
 @  `       a literal
  ?@         question mark and at
     +;     and append the input

样品运行

Command line: lala
?@lala

输出是包含输入的字符串文字，其后是PRINT命令。

— 施滕伯格
source

2

批量 11 bytes

我敢肯定有缩小它的方法，但这很小。

set/p=echo

细目：

set             ::Define new variable
   /p           ::Create prompt
     =          ::Define a variable in prompt
      echo      ::Prompt begins with 'echo '

用英语：

要求用户输入前导短语echo。然后用户可以键入任何内容，程序终止（例如echo hello world!）。这给我们留下了一个程序，该程序在运行时将输出hello world!。

是的，应该在空白处

— 引力子
source

I don't know batch (and this is from long ago), but this looks wrong. Wouldn't the echo portion be text echoed to the console and not program output?

— Jakob

@Jakob suprosingly no, it's essentially functionally equivalent to the python example given in the initial challenge.

— Graviton

Oops--what I meant is that I doubt the program outputs the text the user types. It's probably just echoed to the console, right?

— Jakob

@Jakob Right, which is equivalent to printing. The example prints a print function while mine echos an echo function.

— Graviton

OK, but the example prints the entire program to standard out. Your program prints only echo to standard out. In fact, (I assume) if input comes from a file or pipe, all you'd see is the prompt. Has that kind of output been allowed?

— Jakob

2

V, 2 bytes

ii

In Vim, i changes to insert mode and allows inserting text. In this case, it just inserts the i in front of the input text (to create the second program). V is Vim compatible, but adds an implicit <esc> to the end of the program, so I don't need to worry about it here.

— nmjcman101
source

2

PowerShell, 9 Bytes

"'$args'"

single or double quotes in powershell can be used to contain strings, but only double-quotes allow variable expansion.

with an input of foo this will output 'foo' which is a valid powershell program which outputs foo

— colsw
source

2

Cubically, 87 bytes

U3D1R3L1F3B1U1D3~:7+1(-1@3(-1%1)6:1+3111@6%1-31111+004@6:1+11111%6:1+45@6:1-1%6~:7+1)6

Try it online!

A port of my answer here. There already existed a challenge to take input and output Cubically code that produced that input, and I had an answer in Cubically so... profit?

— Kamil Drakari
source

Save a few bytes - remove the arguments from %6s and @6s; they can now be called implicitly. (You can also do that on your answer on the cubifier thread.)

— MD XF

2

D, 92 89 bytes

void main(){import std.stdio;write(`void main(){import std.stdio;"`~readln~`".write;}`);}

Try it online!

— Zacharý
source

2

Python 2, 17 bytes

'print%r'.__mod__

Try it online!

— ovs
source

This fails for 1

— NoOneIsHere

2

@NoOneIsHere the challenge requires to take a string as input. If you pass '1' to the function it correctly outputs print'1'

— ovs

Oh, I'm sorry. I didn't notice that.

— NoOneIsHere

1

SOGL V0.12, 2 bytes

$+

Try it Here! (expects input on stack so , is added for ease-of-use)

$ pushes ”, + joins that after the input on the stack.

— dzaima
source

You can use `"` for ".

— NoOneIsHere

@NoOneIsHere yeah, that makes sense.. Used it everywhere else except where it's the most useful .-.

— dzaima

1

Perl 6, 19 bytes

say "say "~get.perl

Try it

This should work for any Unicode input in NFC

— Brad Gilbert b2gills
source

Can you remove the space?

— NoOneIsHere

@NoOneIsHere Removing either space would result in a two terms in a row error. Perl 6 has significant whitespace, but it is only significant in that it either has to be there, or has to not be there. (there are ways of opting out of both though)

— Brad Gilbert b2gills

1

8th, 34 37 bytes

Code

: f >s "\"" tuck s:+ s:+ " ." s:+ . ;

Example

ok> "Print 42" f
"Print 42" .
ok> "Print 42" .
Print 42

— Chaos Manor
source

1

PHP, 12 bytes

<?=$argv[1];

Try it online!

This is to be run from the command line with the input as the parameter argument. And yes, it simply outputs the input string—but that is valid PHP: anything outside the <?php ?> delimiters is output unprocessed.

Here is the script produced by the 'testing123' input in action as a demonstration: Try it online!

— WebSmithery
source

1

this won't work quite right if the input string contains <?php, mind you ;)

— Andrea

@Andrea Read the question: "It must be able to handle any combination of characters A-Z, a-z, and 0-9." So '<?php' is invalid input…

— WebSmithery

1

aw, that's too easy :(

— Andrea

1

MATL, 2 bytes

&D

Try it online!

Simply wraps the string in quotes using &D, which is MATL's equivalent to MATLAB's mat2str, a function specifically made to make something that, when eval'd, will give the original matrix (or in this case, string).

The resulting 'program' is just the input string wrapped in quotes, which is thus pushed on the stack, and implicitly displayed.

— Sanchises
source

1

eacal, 38 bytes

strap string put string 
put strap arg

Try it online!

Simply appends the string put string to the memory string, then appends the argument, which is printed.

— Conor O'Brien
source

1

Batch, 14 bytes

@echo @echo(%*

Works for special characters too if they are quoted using "s rather than ^.

— Neil
source

Perhaps @echo.@echo.%* would be more correct? The input could be potentially empty.

— Conor O'Brien

@ConorO'Brien Well I don't need the first . because that's never empty, and I used a ( for the second case because that's more reliable than ., but thanks for the suggestions anyway!

— Neil

np! I just like the symmetry between the @echo.s lol

— Conor O'Brien

1

Ly, 14 bytes

"\""&i"\"&o"&o

Try it online!

Explanation

"\""&i"\"&o"&o

"\""           # push `"`
    &i         # take input
      "\"&o"   # push `"&o`
            &o # output stack
               # test -> "test"&o
               # "test"&o = push "test" and output stack

— LyricLy
source

1

05AB1E, 3 bytes

'"«

Try it online!

Surround input with quotes.

-1 @Adnan.

— Magic Octopus Urn
source

1

Brain-Flak, 92 68 bytes

-22 bytes thanks to Wheat Wizard

Includes +2 for -cr

{<>(((((()()()()()){}){}){})())<>{({}[()])<>((({}[()])()))<>}{}}<>

Try it online!

# For every character
{

   # Put ")(" on the off stack
   <>(((((()()()()()){}){}){})())<>

   # for 0 to the ASCII value of this character
   {({}[()])

      # Replace the ")" with "(" and add "))"
      <>((({}[()])()))<>

   # End for
   }{}

# end for and switch to the off stack for printing (in reverse order because of -r)
}<>

— Riley
source

1

Pyth, 2 1 byte

Try it online!

Just outputs the input. Requires strings to be in quotes.

-1 byte thanks to KarlKastor

— NoOneIsHere
source

Can you just do +\"? (\x char literal + implicit Q)

— ETHproductions

@ETHproductions Even better, +N

— NoOneIsHere

Nice, I don't know Pyth quite that well :-)

— ETHproductions

1

Carrot, 1 byte

How it works

# //Takes the input and places it onto the string stack
  //This is then output implicitly

{input} //The next program then consists of the input string
        //This is then placed directly onto the string stack
        //Then output implicitly

An alternative, also at 1 byte is:

This works the same as the above but only takes the first line of input. Seeing as input will only ever be [A-Za-z0-9] this is fine.

— TheLethalCoder
source

Considering the spec only claims that you need to handle A-Z, a-z, and 0-9, isn't this competing?

— jkelm

@jkelm I must have missed that part, then yes this is competing.

— TheLethalCoder

Would this work for input 01?

— a spaghetto

@quartata I believe so, it’s been a while since I’ve used Carrot though.

— TheLethalCoder

输出输出打印给定输入的脚本的脚本

pl，0字节

码：

说明：

Brainfuck，56 55 33字节

说明

其他解决方案

莫宁顿月牙，27640字节

说明

果冻，1字节

木炭，1个字节

C（gcc），89 87 58 56字节

Japt，2个字节

Python 2，22个字节

MATLAB / 八度，15字节

MATLAB，27个字节

Befunge-98（FBBI），21 16 12字节

怎么样？

表情符号，88字节

QBIC，7个字节

说明

样品运行

批量 11 bytes

细目：

用英语：

V, 2 bytes

PowerShell, 9 Bytes

Cubically, 87 bytes

D, 92 89 bytes

Python 2, 17 bytes

SOGL V0.12, 2 bytes

Perl 6, 19 bytes

8th, 34 37 bytes

PHP, 12 bytes

MATL, 2 bytes

eacal, 38 bytes

Batch, 14 bytes

Ly, 14 bytes

Explanation

05AB1E, 3 bytes

Brain-Flak, 92 68 bytes

Pyth, 2 1 byte

Carrot, 1 byte