Use function to build solution

routines/CharacterCounting.m

@@ -1,23 +1,28 @@
  ; https://www.isharkfly.com/t/mumps-character-counting/15224
- SET array("a")="adsakljasdira"
- SET array("D")="DDD"
- DO countCharsInAry(.array, .countByChar)
+ SET ary("1")="abcabc a"
+ SET ary("10")="abcabc aba"
+ ;SET ary("11")="abcabc aba"
+
+ DO countCharsInAry(.ary, .countByChar)
  set name=""
- f  s name=$O(countByChar(name)) q:name=""  w !,countByChar(name)
+ f  s name=$O(countByChar(name)) q:name=""  w !,name,">",countByChar(name)
  QUIT
 countCharsInAry(ary,countByChar)
- SET name=""
- FOR  SET name=$O(ary(name)) QUIT:name=""  DO  SET countByChar(name)=$$getCount(ary(name),name)
- QUIT
-getCount(str,subStr)
- SET count=0
- SET position=0
-
- FOR {
-    SET position=$FIND(str, subStr, position)
-    QUIT:position=0
-    SET count=count+1
-    SET position=position
- }
-
- QUIT count
+ S name=""
+ FOR  SET name=$O(ary(name)) QUIT:name=""  D
+ . W !,ary(name)
+ . S countByChar=$$getCount(ary(name))
+ Q
+getCount(str)
+ S countByChar=""
+ SET totalChars = 0
+ FOR charIndex = 1:1:$LENGTH(str) DO
+ . S currentChar=""
+ . S currentChar = $EXTRACT(str, charIndex)
+ . W !,$DATA(countByChar(currentChar))
+ . IF $DATA(countByChar(currentChar))'=1 DO
+ . . SET countByChar(currentChar) = 1
+ . ELSE  DO
+ . . SET countByChar(currentChar) = countByChar(currentChar) + 1
+ . SET totalChars = totalChars + 1
+ q countByChar