编写一个程序或函数，以摩尔斯电码的数学表达式作为输入，然后以摩尔斯电码返回解决方案。

有效操作为加号：+和减号：（_下划线）。您可以假设您只会收到非负整数输入，并且结果将是非负整数。

该表达式将至少包含两个词，最多包含十个词。不会有两个相邻的运算符.----+_-....，也就不会有括号。

数字用单个空格分隔。您可以选择将运算符与数字分开，每边用一个空格隔开（请参见示例）。

数字0-9的摩尔斯等效项是：

0  -----
1  .----
2  ..---
3  ...--
4  ....-
5  .....
6  -....
7  --...
8  ---..
9  ----.

例子：

Input
Output


.----+.----  (1+1=2) Optional input: .---- + .----
..---

-...._...--  (6-3=3) Optional input: -.... _ ...--
...--

..---_...--+..--- (2-3+2=1)
1

..---+...--_....-+---.._.....  (2+3-4+8-5=4)
....-

.---- ..---_-....+...-- ...--  (12-6+33=39)
...-- ----.

----. -----+----.+..--- ----._..... .....+---..+-...._.----+----.+----._..--- -----  (90+9+29-55+8+6-1+9+9-20=84)
---.. ....-

有关I / O格式等的标准规则适用。可以接受一些尾随空格和一个换行符。您不能将数字分成几行。您不能使用eval或等效功能。

这是代码高尔夫球，因此以字节为单位的最短代码获胜。

Pyth，69 63字节

J_.:s*R5"-.-"5jdm@Jsd`s*MC,mssdc`MKmxJdcz)"-1"+1mtyq\+@cz)dx_1K

在这里尝试

或使用测试套件

说明

J_.:s*R5"-.-"5                                                  - Construct the morse sequence 0-10
              jd                                                - Prettify output (join by spaces)
                m@Jsd                                           - Get the morse for each character in output
                     `s                                         - Convert to a string
                         C,mssdc`MKmxJdcz)"-1"                  - Get the numbers
                       *M                                       - Multiply the numbers by the operators
                                              +1mtyq\+@cz)dx_1K - Turn `+` and `_` to +-1

感谢@Jakube，节省了6个字节！

视网膜，132字节

一个凌乱的首过解决方案。

(-)+\.+
5$*.$#1$*.
(-|(\.))+ ?
$#2
\d+
$*
+`(1(_)1|(_1+)|_|\+)(.*)
$2$4$3
1+
$.0
\d
$*x5$*- 
(x)+x{5}-*
$#1$*-xxxx
(\S{5})\S*
$1
x
.

在线尝试！

MATL，75 71 69 68字节

5:t!<t~v45+cXIO1Oj6ZC"@2#0)Iw!Xmfqb+wXK32=?10*}*+K?K9\6-O}V47-Y)Z{Zc

在线尝试！

一般说明

我在下面使用代码格式，以便缩进表示操作的嵌套。

The input is split into chunks of 6 characters. The last chunk will have
5 characters padded by a 0 char.
   A 0 is initially pushed. This will contain the accumulated global result.
      Each operand (sequence of digits) is processed as follows. A "sign digit",
      1 or -1, has been previously pushed according to whether the preceding
      operator was + or - (for the first operand 1 is used as sign digit).
      Then a 0 is pushed. This will contain the accumulated operand value.
         Each digit of the operand is transformed into the a number `0`...`9` and
         accumulated to the operand value, with successive multiplications by `10`.
      When a + or - is detected, the current operand is finished. So it is 
      multiplied by its sign digit, and added to the acumulated global result.
      A new sign digit is pushed (1 for +, -1 for -), and a new 0 is pushed
      as initial accumulated operand value for the next operand.
   When a 0 char is detected instead of + or -, this marks the end of the input.
   The current global accumulated result is the definitive value. This is
   tranformed into Morse digits and displayed.

详细说明

5:t!<         % first half of the 10x5 array of Morse digits, with 0 for - and 1 for .
t~v           % vertically concat second half, i.e. first half vertically flipped
45+cXI        % transform 0 1 to chars - . Copy this "digit table" to clipboard I
O             % push 0: initial value for accumulated global result
1             % push 1: sign digit for first operand
O             % push 0: initial value of operand
j             % input string
6ZC           % arrange 6-length non-overlapping blocks as columns. Last is 0-padded
"             %   for each column
  @           %   push column
  2#0)        %   split into last element and vector or remaining elements
  I           %   push digit table
  w!          %   swap and transposed into a row
  Xmfq        %   index of that row in the digit table. Subtract 1: gives the digit
  b+          %   bubble up current operand value to top. Add to the new found digit
  wXK         %   swap last char of column (+,-,space,0) to top. Copy to clipboard K
  32=         %   is it space?
  ?           %   if so
    10*       %     multiply by 10. The operand will continue with next digit
  }           %   else: the operand is done
    *         %     multiply by sign digit
    +         %     add this operand with its sign to accumulated global result
    K         %     push last char of column again
    ?         %     if it's not 0
      K9\6-   %       push 1 if it's a +, -1 if it's a -: sign digit of next operand
      O       %       push 0 to initiallize accumulated operand value of next operand
    }         %     else: it's a 0: we're done computing the result
      V       %       convert result to string to get its digits
      47-Y)   %       index the rows of the digit table that was initially pushed
      Z{Zc    %       join rows by spaces
              %     end if, implicit
              %   end if, implicit
              % end for each, implicit
              % display, implicit

Javascript（ES6）236字节

有很大的改进空间

q=>(q.replace(/[.-]{5}/g,q=>(a=q.split`.`.length)&&q[4]=='-'?a-1:11-a).replace(/ /g,'').split(/([_+])/).reduce((l,o)=>l+(+o?(n=='_'?-(+o):+o):(n=o)&&0),0,n='')+[]).split``.map(u=>(((a='.....')+'-----').slice(5-u)+a).substr(0,5)).join` `

q=>
 (
 //grab each set of 5 dits/dahs
 q.replace(/[.-]{5}/g,


  //count dits
  //if last digit is '-' return dits-1
  //else return 11-dits
  q=>(a=q.split`.`.length)&&q[4]=='-'?a-1:11-a)

   //remove spaces and split on operators + and _
   .replace(/ /g,'').split(/([_+])/)

    //reduce the array into one element
    //start with 0;
    //when we come across a number add it to the total
    //when we come across an operator change current op to it
    .reduce((l,o)=>l+(+o?(n=='_'?-(+o):+o):(n=o)&&0),0,n='')

  //cast to string
  +[])

 //turn to array
 .split``

  //turn each digit back to morse
  .map(u=>(".....-----".slice(5-u)+'.....').substr(0,5)).join` `   

用法

f=q=>(q.replace(/[.-]{5}/g,q=>(a=q.split`.`.length)&&q[4]=='-'?a-1:11-a).replace(/ /g,'').split(/([_+])/).reduce((l,o)=>l+(+o?(n=='_'?-(+o):+o):(n=o)&&0),0,n='')+[]).split``.map(u=>(((a='.....')+'-----').slice(5-u)+a).substr(0,5)).join` `

f("----. -----+----.+..--- ----._..... .....+---..+-...._.----+----.+----._..--- -----")

纯bash中，366 317

a=----- p='v+=($a);a=${a/-/.}';q=${p/-?././-};. <(echo $p{,,,,} $q{,,,,});p(){
[ ${1:0:1} = . ]&&{ b=${1%%-*};o+=${#b};}||{ b=${1%%.*} o+=$[(5+${#b})%10];};}
s=${1//[-.]/};for i in ${1//[+_]/ };do p $i;t=${s:0:1};o+=${t// };s=${s:1};done
r=$[${o//_/-}];for ((i=0;i<${#r};i++));do w+=(${v[${r:i:1}]});done;echo ${w[@]}

好的，我可以保存10个字节以写到第一行来达到307：

v=(----- .---- ..--- ...-- ....- ..... -.... --... ---.. ----.);p(){

而不是（但我喜欢）：

a=----- p='v+=($a);a=${a/-/.}';q=${p/-?././-};. <(echo $p{,,,,} $q{,,,,});p(){

样品：

cat >/tmp/morseCalc.sh <<'eof'
#!/bin/bash
a=----- p='v+=($a);a=${a/-/.}';q=${p/-?././-};. <(echo $p{,,,,} $q{,,,,});p(){
[ ${1:0:1} = . ]&&{ b=${1%%-*};o+=${#b};}||{ b=${1%%.*} o+=$[(5+${#b})%10];};}
s=${1//[-.]/};for i in ${1//[+_]/ };do p $i;t=${s:0:1};o+=${t// };s=${s:1};done
r=$[${o//_/-}];for ((i=0;i<${#r};i++));do w+=(${v[${r:i:1}]});done;echo ${w[@]}
eof
chmod +x /tmp/morseCalc.sh

for test in 1+1 6-3 2-3+2 2+3-4+8-5 12-6+33 90+9+29-55+8+6-1+9+9-20 ;do
    string="$(sed 's/ \.\.\.-\.-$//;s/ \.-\.-\. /+/g;s/ -\.\.\.\.- /_/g' <(
        xargs < <(morse -s -- $test)))"
    out="$(/tmp/morseCalc.sh "$string")"
    res=$(morse -sd <<< "$out")
    echo "$test: $string = $out -> $res"
  done |
    fold -w 80 -s

1+1: .----+.---- = ..--- -> 2
6-3: -...._...-- = ...-- -> 3
2-3+2: ..---_...--+..--- = .---- -> 1
2+3-4+8-5: ..---+...--_....-+---.._..... = ....- -> 4
12-6+33: .---- ..---_-....+...-- ...-- = ...-- ----. -> 39
90+9+29-55+8+6-1+9+9-20: ----. -----+----.+..--- ----._..... 
.....+---..+-...._.----+----.+----._..--- ----- = ---.. ....- -> 84

或者morse未安装转换器：

for test in .----+.---- -...._...-- ..---_...--+..---  \
 ..---+...--_....-+---.._..... ".---- ..---_-....+...-- ...--" "----. -----+\
----.+..--- ----._..... .....+---..+-...._.----+----.+----._..--- -----" ;do
    echo $test $(
        bash <(sed '$s/;f/;echo "(${o\/\/_\/-}=$r)";f/' /tmp/morseCalc.sh
            ) "$test" )
  done |
    fold -w80 -s

.----+.---- (1+1=2) ..---
-...._...-- (6-3=3) ...--
..---_...--+..--- (2-3+2=1) .----
..---+...--_....-+---.._..... (2+3-4+8-5=4) ....-
.---- ..---_-....+...-- ...-- (12-6+33=39) ...-- ----.
----. -----+----.+..--- ----._..... .....+---..+-...._.----+----.+----._..--- 
----- (90+9+29-55+8+6-1+9+9-20=84) ---.. ....-