LeetCode03--无重复字符的最长子串

 '''
 给定一个字符串，请你找出其中不含有重复字符的 最长子串 的长度。
 示例 1:
 输入: "abcabcbb"
 输出: 3
 解释: 因为无重复字符的最长子串是 "abc"，所以其长度为 3。
 '''

 class Solution:
     def lengthOfLongestSubstring(self, s):
         """
         :type s: str
         :rtype: int
         """
         if s:
             maxStr = s[0]
             maxLen = 1
             resultLen = 0
             for t in s[1:]:
                 if t in maxStr:
                     tempLen = len(maxStr)
                     if tempLen > maxLen:
                         maxLen = tempLen
                     maxStr += t
                     maxStr = maxStr[maxStr.index(t) + 1:]
                 else:
                     maxStr += t
                     resultLen = len(maxStr)
             # print(maxLen)
             # print(resultLen)
             return max(maxLen, resultLen)
         else:
             return 0

 if __name__ == '__main__':
     s = 'erxdcdactfvgcfcfxdrw'
     max = Solution().lengthOfLongestSubstring(s)
     print(max)