我们的新银行需要一个柜员交易系统，但是有一个问题。我们的服务器上只剩下几百个字节的空间，因此您将必须编写非常紧凑的代码。

数据库

幸运的是，我们的数据库非常简单（它是由银行行长的小学生儿子建立的），到目前为止，我们只有几个客户。

文件Bank.data是：

Account Firstname Lastname Balance Date
123 Maree Jones 346.22 2014-12-13
035 Thomas Breakbone 3422.02 2015-01-03
422 Henrietta Throsby-Borashenko 277847.74 2014-11-21
501 Timmy Bongo 7.95 2014-11-04
105 William Greene 893.00 2015-01-06
300 Mary Galoway 1228.73 2014-12-28
203 Samantha Richardson 2055.44 2014-11-01
151 Bruce Wayne 956119.66 2014-10-09
166 Chip Stonesmith 266.71 2014-12-15
888 Alexandria Cooper 1299.82 2014-12-30

应用规格

我们的银行应用程序必须实现以下命令：

open <firstname> <lastname> 创建（开设）一个新帐户，并打印一个唯一的3位数帐号。

withdraw <account> <amount> 从账户中提款。

deposit <account> <amount> 将金额存入帐户。

close <account> 如果为空，请关闭帐户。

report <fieldname> 打印按字段名排序的数据库报告。将fieldname列移到第一个位置。每列宽度将是最大数据和字段名宽度的最大值，以一个空格分隔。第一行将是字段标题。余额仅需右对齐并带有前导$符号。

print <account> 打印字段名并记录该帐户的格式，使其类似于报告。

每次更改记录时，记录中的Date字段必须更新为当前日期。

等待命令时，应用程序将显示“＃”提示。如果命令失败（例如，对未知帐户的操作或资金不足），则应用程序必须打印信息性错误消息“失败”。该程序必须在每次更改后将更改写回到文件中，并在每个命令上从文件中读取，因为世界上有许多柜员程序同时在文件上运行（我们不需要文件锁定-这可能会降低性能）。

编辑：字符串字段是没有空格的简单ASCII（az，AZ，-），金额始终在0.00到1000000000.00（10亿）美元之间，小数点后两位表示美分。日期将是每个分支机构的当地时间（一种简单的解决方案，但稍后可能会导致一些问题...）。

输出量

答案需要证明它们符合规范。处理以下命令后，请附加程序的输出：

report Balance
open Clark Kent
print 001
deposit 001 4530
withdraw 105 893
close 105
report Date

确保使用Bank.data上面给出的文件的原始副本。

计分

这是代码高尔夫球，因此得分将是代码的字节数。禁止出现标准漏洞。

红宝石918

高尔夫这个问题很长，因为它包含许多小部分。有一会儿，我几乎想定义一些附加的类，以使事物在多态等方面变得更加整洁（但最终我没有）。

l=->a,i{a.map{|x|x[i].to_s.size}.max}
y=1..-1
d=File.open(f="bank.data").each.map(&:split)
j=[k=%w{Account Firstname Lastname Balance Date}]
_=->{puts"Failure"}
q=->t,v=0{z=-1;puts t.map{|r|([v]+((0..4).to_a-[v])).map{|c|b=l[t,c];c!=3?r[c].ljust(b):(?$*(z+=z<1?1:0)+r[c]).rjust(b>7?b+1:b)}*' '}}
w=->d{File.open(f,?w).write(d.map{|x|x*' '}*?\n)}
s=->i,m=!0{o=d.select{|r|r[0]==i};o==[]?_[]:m ?q[[k]+o]:1}
u=->{Time.now.to_s[0..9]}
($><<"# ";i=gets.split;o=i.size;("report"==h=i[0])?((v=k.index i[1])?q[j+d[y].sort_by{|x|v!=3?x[v]:x[v].to_f},v]:_[]):h=="print"?s[i[1],0]:h=="close"?(s[m=i[1]]?w[d=j+d[y].select{|r|r[0]!=m}]:0):h=="open"?((o==3&&t=((1..999).map{|x|'%03d'%x}-d.map{|x|x[0]})[0])?(w[d=d+[[t,i[1],i[2],'0.00',u[]]]];puts t):_[]):h=="withdraw"||h=="deposit"?(o==3&&s[i[1]]?w[d=j+d[y].map{|r|i[1]==r[0]?(b=(c=r[3].to_f)+i[2].to_f*(i[0][0]==?w?-1:1);0>b&&(b=c;_[]);r[0..2]+["%.2f"%b,u[]]):r}]:_[]):_[])while 1

可能可以进一步打高尔夫球。但是到目前为止，我什至无法跟踪上一行的内容。

输出：

# report Balance
   Balance Account Firstname  Lastname           Date      
     $7.95 501     Timmy      Bongo              2014-11-04
   $266.71 166     Chip       Stonesmith         2014-12-15
   $346.22 123     Maree      Jones              2014-12-13
   $893.00 105     William    Greene             2015-01-06
  $1228.73 300     Mary       Galoway            2014-12-28
  $1299.82 888     Alexandria Cooper             2014-12-30
  $2055.44 203     Samantha   Richardson         2014-11-01
  $3422.02 035     Thomas     Breakbone          2015-01-03
$277847.74 422     Henrietta  Throsby-Borashenko 2014-11-21
$956119.66 151     Bruce      Wayne              2014-10-09
# open Clark Kent
001
# print 001
Account Firstname Lastname Balance Date      
001     Clark     Kent       $0.00 2015-02-01
# deposit 001 4530
# withdraw 105 893
# close 105
# report Date
Date       Account Firstname  Lastname              Balance
2014-10-09 151     Bruce      Wayne              $956119.66
2014-11-01 203     Samantha   Richardson           $2055.44
2014-11-04 501     Timmy      Bongo                   $7.95
2014-11-21 422     Henrietta  Throsby-Borashenko $277847.74
2014-12-13 123     Maree      Jones                 $346.22
2014-12-15 166     Chip       Stonesmith            $266.71
2014-12-28 300     Mary       Galoway              $1228.73
2014-12-30 888     Alexandria Cooper               $1299.82
2015-01-03 035     Thomas     Breakbone            $3422.02
2015-02-01 001     Clark      Kent                 $4530.00
#

T-SQL 1919

用“ exec q'Your command here'”来调用，我认为T-SQL实际上无法获得用户输入，因此我认为它尽可能接近。

将bcp实用程序用于I / O，我没有尝试过，因为它是SQL Server 2014附带的。

我不确定只使用主存储过程，然后将其余代码放在那是更好还是更坏。

CREATE PROC q @ CHAR(99)AS
CREATE TABLE ##(A CHAR(3),F CHAR(99),L CHAR(99),B MONEY,D DATE)bcp ## in Bank.data -t " " -T
DECLARE @g INT,@w MONEY,@z CHAR(9),@y CHAR(99),@x CHAR(99)SET @g=patindex('% %',@)SET @z=substring(@,1,@g-1)SET @=substring(@,@g+1,99)SET @g=patindex('% %',@)SET @y=substring(@,1,@g-1)SET @=substring(@,@g+1,99)SET @g=patindex('% %',@)SET @x=substring(@,1,@g-1)SET @w=CONVERT(MONEY,@x)*2*(LEN(@z)-7.5)IF @z='open'exec o @y,@x
IF @z='close'exec c @y
IF @z='withdraw'exec w @y,@w
IF @z='deposit'exec w @y,@w
IF @z='print'exec p @y
IF @z='report'exec r @y
bcp ## out Bank.data -t " " -T
SELECT'#'
CREATE PROC r @q CHAR(9)AS
DECLARE @a char(9)='A Account',@f char(11)='F Firstname',@l char(10)='L Lastname',@b char(45)='CONCAT(''$'',SPACE(9-LEN(B)),B) Balance',@d char(6)='D Date',@ varchar(999)='SELECT '
IF @q='Account'SET @+=@a+','+@f+','+@l+','+@b+','+@d
IF @q='Balance'SET @+=@b+','+@a+','+@f+','+@l+','+@d
IF @q='Date'SET @+=@d+','+@a+','+@f+','+@l+','+@b
IF @q='Lastname'SET @+=@l+','+@a+','+@f+','+@b+','+@d
IF @q='Firstname'SET @+=@f+','+@a+','+@l+','+@b+','+@d
IF LEN(@)<9
BEGIN
SELECT'failed'RETURN
END
SET @+=' FROM ## ORDER BY '+@q
exec(@)CREATE PROC p @ CHAR(3)AS
DECLARE @r CHAR(9)=(SELECT 1 FROM ## WHERE A=@)IF @r IS NULL SELECT'failed'ELSE SELECT*FROM ## WHERE A=@
CREATE Proc o @f CHAR(99),@l CHAR(99)AS
DECLARE @ INT=0,@r CHAR(9)=(SELECT 1 FROM # WHERE A='000')WHILE @r IS NOT NULL
BEGIN

SET @+=1
SET @r=(SELECT 1 FROM # WHERE CONVERT(INT,A)=@)END
IF @>999 SELECT'failed'ELSE INSERT INTO # OUTPUT Inserted.A VALUES(REPLICATE('0',3-LEN(@))+CONVERT(CHAR(3),@),@f,@l,0,GETDATE())CREATE PROC w @ CHAR(3),@b MONEY AS
DECLARE @r CHAR(9)=(SELECT 1 FROM ## WHERE A=@ AND B>@b)IF @r IS NULL SELECT'failed'ELSE UPDATE ## SET B=B-@b,D=GETDATE()WHERE A=@
CREATE Proc c @q CHAR(3)AS
DECLARE @r CHAR(9)=(SELECT 1 FROM ## WHERE A=@q AND B=0)IF @r IS NULL SELECT'failed'ELSE DELETE FROM ## WHERE A=@q

眼镜蛇-1505

class P
    var m='Account Firstname Lastname Balance Date'
    def main
        while[d=DateTime.now.toString('yyyy-MM-dd'),z='0.00']
            print'#'stop
            try,branch (c=Console.readLine.split)[r=0]
                on'open'
                    post while u in for x in.f get x[0],u=(r+=1).toString('000')
                    print u
                    .f=.f.toList+[@[u,c[1],c[2],z,d]]
                on'deposit'or 'withdraw'
                    n=.z(if(c[0]>'deposit','-','')+c[2])
                    assert.z(.i(c[1])[3])+n>=0
                    .f=for x in.f get if(x[0]==c[1],@[x[:3].join(' '),'[(.z(x[3])+n).toString(z)]',d],x)
                on'close'
                    assert.i(c[1])[3]==z
                    .f=for x in.f where.i(c[1])<>x
                on'report',.a(.f,c[1])
                on'print',.a([.i(c[1])])
                else,assert 0
            catch
                print'failed'
    def z(s='')as float
        return float.parse(s)
    pro f as String[]?*
        get
            return for x in File.readAllLines('Bank.data')[1:]get x.split
        set
            File.writeAllLines('Bank.data',[.m]+for x in value get x.join(' '))
    def a(f as String[]?*,c='Account')
        i,l=(m=.m.split).toList.indexOf(c),[7,9,8,8,4]
        assert c in m
        print (for q in (for z in (for x in[m]+f.toList.sorted(do(a as String[],b as String[]))get for y in 5 get[t=try' '.repeat(l[y]-x[y].length)catch get'',if(y-3,x[y]+t,t+if(x==m,' ','$')+x[y])][1])get[z[i]]+for p in z where p<>z[i])get q.join(' ')).join('\n')
            for v in[a,b],for k in 5,if (u=v[k].length)>l[k],l[k]=u
            return[d=a[i].compareTo(b[i]),d,d,.z(a[3]).compareTo(.z(b[3])),DateTime.parse(a[4]).compareTo(DateTime.parse(b[4]))][i]
    def i(s='')as String[]?
        return (for x in.f where x[0]==s)[0]

输出：

#report Balance
   Balance Account Firstname  Lastname           Date      
     $7.95 501     Timmy      Bongo              2014-11-04
   $266.71 166     Chip       Stonesmith         2014-12-15
   $346.22 123     Maree      Jones              2014-12-13
   $893.00 105     William    Greene             2015-01-06
  $1228.73 300     Mary       Galoway            2014-12-28
  $1299.82 888     Alexandria Cooper             2014-12-30
  $2055.44 203     Samantha   Richardson         2014-11-01
  $3422.02 035     Thomas     Breakbone          2015-01-03
$277847.74 422     Henrietta  Throsby-Borashenko 2014-11-21
$956119.66 151     Bruce      Wayne              2014-10-09
#open Clark Kent
001
#print 001
Account Firstname Lastname   Balance Date
001     Clark     Kent         $0.00 2015-02-04
#deposit 001 4530
#withdraw 105 893
#close 105
#report Date
Date       Account Firstname  Lastname              Balance
2014-10-09 151     Bruce      Wayne              $956119.66
2014-11-01 203     Samantha   Richardson           $2055.44
2014-11-04 501     Timmy      Bongo                   $7.95
2014-11-21 422     Henrietta  Throsby-Borashenko $277847.74
2014-12-13 123     Maree      Jones                 $346.22
2014-12-15 166     Chip       Stonesmith            $266.71
2014-12-28 300     Mary       Galoway              $1228.73
2014-12-30 888     Alexandria Cooper               $1299.82
2015-01-03 035     Thomas     Breakbone            $3422.02
2015-02-04 001     Clark      Kent                 $4530.00

Python 2-2205字节

这是一个相当冗长的解决方案尝试。

import sys, time, re
def db(recs):
    text = '\n'.join(' '.join(row) for row in [titles]+recs)
    open('Bank.data', 'wt').write(text+'\n')
def wid(col, recs):
    w = max(len(r[col]) for r in [titles]+recs)
    return w if col == 3 else -w
while 1:
    inp=raw_input('# ').split()
    try:
        cmd = inp.pop(0)
        data = [d.split() for d in open('Bank.data', 'rt').readlines()]
        titles = data.pop(0)
        today = '-'.join('%02u' % v for v in time.localtime()[:3])
        alist = set(int(r[0]) for r in data)
        if cmd == 'open':
            assert re.match(r'[-a-zA-Z]{2,}', inp[0]+inp[1])
            acct = '%03u'%([n for n in range(1, 1000) if n not in alist][0])
            rec = [acct] + inp + ['0.00', today]
            db(data+[rec])
            print acct
        elif cmd == 'withdraw':
            a, m = inp[0], float(inp[1])
            rec = [r for r in data if r[0] == a][0]
            b = float(rec[3])
            assert b >= m
            rec[3] = '%.2f' % (b-m)
            rec[4] = today
            db(data)
        elif cmd == 'deposit':
            a, m = inp[0], float(inp[1])
            rec=[r for r in data if r[0]==a][0]
            rec[3]='%.2f'%(float(rec[3])+m)
            rec[4]=today
            db(data)
        elif cmd=='close':
            rec=[r for r in data if r[0]==inp[0]][0]
            assert int(rec[3])==0
            data=[r for r in data if r!=rec]
            db(data)
        elif cmd=='report':
            for r in data: r[3]='$'+r[3]
            fmtlist=['%'+str(wid(c,data))+'s' for c in range(5)]
            loc=titles.index(inp[0])
            for r in data: r.insert(0,r.pop(loc))
            data.sort(key=lambda x: float(x[0][1:]) if loc==3 else x[0])
            titles.insert(0,titles.pop(loc))
            fmtlist.insert(0,fmtlist.pop(loc))
            for r in [titles]+data: print ' '.join(fmtlist)%tuple(r)
        elif cmd=='print':
            for r in data: r[3]='$'+r[3]
            rec=[r for r in data if r[0]==inp[0]][0]
            fmt=' '.join('%'+str(wid(c,[rec]))+'s' for c in range(5))
            for r in [titles,rec]: print fmt%tuple(r)
        else: raise()
    except:
        print 'failed'

这是正在使用的应用程序的示例：

# report Balance
   Balance Account Firstname  Lastname           Date      
     $7.95 501     Timmy      Bongo              2014-11-04
   $266.71 166     Chip       Stonesmith         2014-12-15
   $346.22 123     Maree      Jones              2014-12-13
   $893.00 105     William    Greene             2015-01-06
  $1228.73 300     Mary       Galoway            2014-12-28
  $1299.82 888     Alexandria Cooper             2014-12-30
  $2055.44 203     Samantha   Richardson         2014-11-01
  $3422.02 035     Thomas     Breakbone          2015-01-03
$277847.74 422     Henrietta  Throsby-Borashenko 2014-11-21
$956119.66 151     Bruce      Wayne              2014-10-09
# open Clark Kent
001
# print 001
Account Firstname Lastname Balance Date      
001     Clark     Kent       $0.00 2015-01-13
# deposit 001 4530
# withdraw 105 893
# close 105
# report Date
Date       Account Firstname  Lastname              Balance
2014-10-09 151     Bruce      Wayne              $956119.66
2014-11-01 203     Samantha   Richardson           $2055.44
2014-11-04 501     Timmy      Bongo                   $7.95
2014-11-21 422     Henrietta  Throsby-Borashenko $277847.74
2014-12-13 123     Maree      Jones                 $346.22
2014-12-15 166     Chip       Stonesmith            $266.71
2014-12-28 300     Mary       Galoway              $1228.73
2014-12-30 888     Alexandria Cooper               $1299.82
2015-01-03 035     Thomas     Breakbone            $3422.02
2015-01-13 001     Clark      Kent                 $4530.00
# 

批次-1827

批处理不是为这种事情而构建的。

@echo off&setLocal enableDelayedExpansion&set B=Bank.data&echo wscript.echo eval(wscript.arguments(0))>%temp%\eval1.vbs&set Z=goto :EOF&set V=call&set F=for /l %%a in (1,1,
:m
set C=-1&set D=%date:~-4%-%date:~-7,2%-%date:~-10,2%
for /f "tokens=1-5" %%a in (%B%)do set/aC+=1 &set !C!=%%a %%b %%c %%d %%e&set !C!n=%%a&set !C!f=%%b&set !C!s=%%c&set !C!b=%%d&set !C!d=%%e&set A=%%a&set/aA+=1
set/pI="#"
%V% :%I% 2>nul||echo failed&goto m
goto m
:open
echo %A% %1 %2 0.00 %D%>>%B%&echo %A%&%Z%
:close
echo !0!>%B%&%F%!C!)do if "!%%an!" NEQ "%1" (echo !%%a!>>%B%)else if !%%ab! GTR 0.00 echo failed & echo !%%a!>>%B%
%Z%
:deposit
%F%!C!)do if "!%%an!"=="%1" set p=%%a
%V% :c "!%p%b!+%2"
set %p%b=%r%&set %p%d=%D%&%V% :u
%Z%
:withdraw
%F%!C!)do if "!%%an!"=="%1" set p=%%a
%V% :c "!%p%b!-%2"&if "%r:~0,1%"=="-" echo failed&%Z%
set %p%b=%r%&set %p%d=%D%&%V% :u
%Z%
:report
for /l %%a in (1,1,50)do set H= !H!
for /l %%a in (0,1,!C!)do (
%V% :l !%%an!&set %%anl=!l!&if !l! GTR !tn! set/atn=!l!
%V% :l !%%af!&set %%afl=!l!&if !l! GTR !tf! set/atf=!l!
%V% :l !%%as!&set %%asl=!l!&if !l! GTR !ts! set/ats=!l!
%V% :l !%%ab!&set %%abl=!l!&if !l! GTR !tb! set/atb=!l!
)
for /l %%a in (0,1,!C!)do %V% :c "%tn%-!%%anl!"&set sn=!r:~0,-3!&%V% :t !sn!&set pn=!x!&%V% :c "%tf%-!%%afl!"&set sf=!r:~0,-3!&%V% :t !sf!&set pf=!x!&%V% :c "%ts%-!%%asl!"&set ss=!r:~0,-3!&%V% :t !ss!&set ps=!x!&%V% :c "%tb%-!%%abl!"&set sb=!r:~0,-3!&%V% :t !sb!&set pb=!x!&echo !%%an!!pn! !%%af!!pf! !%%as!!ps! !pb!$!%%ab! !%%ad!
%Z%
:l
set S=%1&for /f usebackq %%a in (`Powershell "'!S!'.Length"`)do set l=%%a
%Z%
:t
set x=!H:~0,%1!
%Z%
:u
echo !0!>%B%&%F%!C!)do echo !%%an! !%%af! !%%as! !%%ab! !%%ad!>>%B%&%Z%
:c
for /f %%a in ('cscript //nologo %temp%\eval1.vbs "round(%1,2)"')do set r=%%a
if "%r:~-3,1%" NEQ "." set r=%r%.00

尚未实现排序（在报告内）和打印功能。

斯塔塔1506

没有尝试打太多球。我认为统计语言会更好，但是显然。

set more off
while 1<2{
qui insheet using Bank.data,delim(" ")clear case
form A %-03.0f
form B %10.2f
form D %-10s
form F %-50s
form L %-50s
g K="$"+string(B,"%10.2f")
di"#",_r(q)
loc s: di %tdCCYY-NN-DD date(c(current_date),"DMY")
if word("$q",1)=="open"{
forv x=0/999{
egen c=anymatch(A),v(`x')
if c<1{
egen m=min(A)
cap expand 2 if A==m,gen(z)
replace A=`x' if A==m&z>0
replace B=0 if A==`x'
replace F=word("$q",2) if A==`x'
replace L=word("$q",3) if A==`x'
replace D="`s'" if A==`x'
di"`x'"
outsheet A-D using Bank.data,delim(" ")replace
continue, br
}
if `x'==999{
di"failed"
}
drop c
}
continue
}
if word("$q",1)=="report"{
ren B R
ren K Balance
if word("$q",2)=="Account"{
so A
l A-L B D,clean noo
}
else if word("$q",2)=="Date"{
so D
l D A-L B,clean noo
}
else if word("$q",2)=="Lastname"{
so L
l L A F B D,clean noo
}
else if word("$q",2)=="Balance"{
so R
l B A-L D,clean noo
}
else if word("$q",2)=="Firstname"{
so F
l F A L B D,clean noo
}
else{
di"failed"
}
continue
}
gen i=real(word("$q",2))
egen p=min(abs(A-i))
if p>0{
di"failed"
continue
}
if word("$q",1)=="close"{
egen c=count(i)
drop if A==i&B==0
qui cou
if c==r(N){
di"failed"
continue
}
}
if word("$q",1)=="print"{
drop Balance
ren K Balance
l A-L B D if A==i,noo clean ab(9)
continue
}
gen j=real(word("$q",3))
if word("$q",1)=="withdraw"{
replace B=B-j if A==i
egen c=min(B)
if c<0{
di"failed"
continue
}
}
if word("$q",1)=="deposit"{
replace B=B+j if A==i
}
replace D="`s'" if A==i
outsheet A-D using Bank.data,delim(" ")replace
}

C＃-1952 1883

明天上班时，我将显示一些输出。现在，这是提交的内容：

using System;using System.Collections.Generic;using System.IO;using System.Linq;using S=System.String;using O=System.Func<dynamic,string,string>;class I{char[]c={' '};Action<string>w;Func<S,S,S,S,S,dynamic>n;Func<string>N;List<dynamic>T;private static void Main(string[]a){while(true){Console.Write("# ");new I().Parse(Console.ReadLine());}}I(){w=Console.WriteLine;n=(g,h,i,j,k)=>new{a=g,f=h,l=i,b=j,d=k};N=()=>DateTime.Now.ToString("yyyy-MM-dd");}List<dynamic>G(){return File.ReadAllLines("test.data").Select(l=>l.Split(c)).Select(ac=>n(ac[0],ac[1],ac[2],ac[3],ac[4])).ToList();}void W(){File.WriteAllLines("test.data",T.Select(a=>(S)(a.a+" "+a.f+" "+a.l+" "+a.b+" "+a.d)));}void Parse(string inp){var C=true;try{Func<object,float>v=Convert.ToSingle;Func<string,bool>s=string.IsNullOrEmpty;var i=inp.Split(c);T=G();Func<S,int>F=m=>T.IndexOf(T.FirstOrDefault(a=>a.a==m));C=!s(i[1]);var g=F(i[1]);switch(i[0]){case"open":if(C){int an=0;var cs="000";while(T.Any(A=>cs==A.a)){an++;cs=an.ToString("D3");}T.Add(n(cs,i[1],i[2],"0.00",N()));w(cs);}break;case"withdraw":case"deposit":var D=i[0]=="deposit";C=(D||v(T[g].b)>=v(i[2]));var ba=(v(T[g].b)+v(i[2])*(D?1:-1)).ToString("F");if(C)T[g]=n(T[g].a,T[g].f,T[g].l,ba,N());break;case"close":C=g>-1&&v(T[g].b)<=0;if(C)T.RemoveAt(g);break;case"report":case"print":var X=i[0]=="print";var B=1;O o=(x,p)=>((Type)x.GetType()).GetProperty(p).GetValue(x);O K=(k,j)=>{var r=(j=="b"?"$":"");var P=T.Max(_=>(o(_,j)).Length);return r==""?(o(k,j)).PadRight(P):((B<1?r:"")+(o(k,j))).PadLeft(P+1);};var q=i[1];Action<dynamic,S>U=(u,t)=>{S l=""; foreach(var h in t)l+=K(u,h.ToString())+" "; w(l);};q=q=="Account"?"a":q=="Firstname"?"f":q=="Lastname"?"l":q=="Balance"?"b":q=="Date"?"d":"a"; var V=(q+"afldb".Replace(q,""));U(T.First(),V);B=0;foreach(var M in(X?T.Skip(1).Take(1):T.Skip(1).OrderBy(df=>o(df,q))))U(M,V);break;}W();}catch{}if(!C)w("Failed");}}

C＃-1870 1881字节

滥用using别名Action，Func用于流量控制和更多的异常。正在考虑利用“报告”未指定事物应如何排序的方式。Bank.data必须使用unix换行符，否则此代码将中断。

编辑以解决按日期和余额以外的字段排序的潜在问题。

using System;using System.Collections.Generic;using System.IO;using System.Linq;using Ac=System.Action;using Cn=System.Console;using F1=System.Func<string,int>;using F2=System.Func<string>;using S=System.String;class P{static void Main(S[] args){S fn="Bank.data";List<S>ad=null;F1 L=(s)=>s.Length;F2 dt=()=>S.Format("{0:yyyy-MM-dd}",DateTime.Now);Func<S,S[]>sp=(s)=>s.Split(' ');Action<S,S>wl=(s,fm)=>Cn.WriteLine(S.Format(fm,sp(s)));Func<S,S>rs=(s)=>{var t=sp(s);t[3]="$"+t[3];return S.Join(" ",t);};F2 fs=()=>{int[]sz={7,9,8,7};ad.Skip(1).ToList().ForEach(b=>{for(int c=0;c<4;c++){sz[c]=Math.Max(sz[c],L(sp(rs(b))[c]));}});return"{0,-"+sz[0]+"} {1,-"+sz[1]+"} {2,-"+sz[2]+"} {3,"+sz[3]+"} {4,-10}";};F1 k=(s)=>sp(ad[0]).ToList().FindIndex(a=>a==s);Ac Sv=()=>File.WriteAllText(fn,S.Join("\n",ad));Ac Ld=()=>ad=File.ReadAllText(fn).Split('\n').ToList();Action<int,S>R=(r,a)=>{var s=sp(ad[r]);s[3]=S.Format("{0:#.00}",Convert.ToDouble(s[3])+Convert.ToDouble(a));s[4]=dt();ad[r]=S.Join(" ",s);};Ac f=()=>wl("failure","{0}");F1 ri=(n)=>{for(int w=1;w < ad.Count;w++){if(ad[w].StartsWith(n))return w;}return -1;};F2 nm=()=>{var s="";for(int i=1;i<1000;i++){s=S.Format("{0:000}",i);if (ri(s)<0)break;}return s;};for(;;){Cn.Write("# ");S i=Cn.ReadLine();var it=sp(i+" ");Ld();var n=ri(it[1]);it=sp(i);var a=new Dictionary<S,Ac>(){{"deposit",()=>R(n,it[2])},{"withdraw",()=>R(n,"-"+it[2])},{"close",()=>(sp(ad[n])[3]==".00"?()=>ad.RemoveAt(n):f)()},{"open",()=>{var nn=nm();ad.Add(S.Format("{0} {1} {2} .00 {3}",nn,it[1],it[2],dt()));wl(nn,"{0}");}},{"print",()=>{wl(ad[0],fs());wl(rs(ad[n]),fs());}},{"report",()=>{var ks=sp(fs()).ToList();var ki=k(it[1]);ks.Insert(0,ks[ki]);ks.RemoveAt(ki+1);var kf=S.Join(" ",ks);wl(ad[0],kf);ad.Skip(1).OrderBy(b=>(ki==3?new S('0',11-L(sp(b)[ki])):"")+sp(b)[ki]).ToList().ForEach(b=>wl(rs(b),kf));}}};try{a[it[0]]();Sv();}catch(Exception){f();}}}}

输出：

# report Balance
   Balance Account Firstname  Lastname           Date
     $7.95 501     Timmy      Bongo              2014-11-04
   $266.71 166     Chip       Stonesmith         2014-12-15
   $346.22 123     Maree      Jones              2014-12-13
   $893.00 105     William    Greene             2015-01-06
  $1228.73 300     Mary       Galoway            2014-12-28
  $1299.82 888     Alexandria Cooper             2014-12-30
  $2055.44 203     Samantha   Richardson         2014-11-01
  $3422.02 035     Thomas     Breakbone          2015-01-03
$277847.74 422     Henrietta  Throsby-Borashenko 2014-11-21
$956119.66 151     Bruce      Wayne              2014-10-09
# open Clark Kent
001
# print 001
Account Firstname  Lastname              Balance Date
001     Clark      Kent                     $.00 2015-02-03
# deposit 001 4530
# withdraw 105 893
# close 105
# report Date
Date       Account Firstname  Lastname              Balance
2014-10-09 151     Bruce      Wayne              $956119.66
2014-11-01 203     Samantha   Richardson           $2055.44
2014-11-04 501     Timmy      Bongo                   $7.95
2014-11-21 422     Henrietta  Throsby-Borashenko $277847.74
2014-12-13 123     Maree      Jones                 $346.22
2014-12-15 166     Chip       Stonesmith            $266.71
2014-12-28 300     Mary       Galoway              $1228.73
2014-12-30 888     Alexandria Cooper               $1299.82
2015-01-03 035     Thomas     Breakbone            $3422.02
2015-02-03 001     Clark      Kent                 $4530.00
#