LeetCode-3 Longest Substring Without Repeating Characters : Given a string s, find the length of the longest substring without repeating characters. note : s consists of English letters, digits, symbols and spaces.Answer :::python class Solution: def lengthOfLongestSubstring(self, s: str) -> int: if len(s)==1: return 1 left, right, answer_max = 0, 1, 0 for _ in range(len(s)): while (left
