Method reduce_abc

String/LetterCombinationsOfAPhoneNumber.py:54–61

(strs, currentStr="")

        result = []
        
        def reduce_abc(strs, currentStr=""):
            if not strs:
                return currentStr
            else:
                for i in maps[strs[0]]:
                    x = reduce_abc(strs[1:], currentStr=currentStr+i)
                    if x:
                        result.append(x)
        reduce_abc(digits)
        return result