Question

python怎么判断字符串中出现次数最多的字母

Answer 1

class Solution(object): def lengthOfLongestSubstring(self, s): """ :type s: str :rtype: int """ lenS = len(s); maxLen = 0; left = right = 0; charDict = {}; while right < lenS: if s[right] in charDict and left <= charDict[s[right]]: #出现重复的字符且这个字符在窗口中 left = charDict[s[right]] + 1; #左窗口位置调整到这个重复字符的右端 else: #没有重复字符出现 maxLen = max(maxLen,right - left + 1); #更新最长长度 charDict[s[right]] = right; #更新字符位置 right += 1; #右窗口后移 return maxLen;