Longest Substring Without Repeating Characters Python Solution Leetcode 3

By themelower On Jul 19, 2025

Longest Substring Without Repeating Characters Leetcode Solution Longest substring without repeating characters given a string s, find the length of the longest substring without duplicate characters. example 1: input: s = "abcabcbb" output: 3 explanation: the answer is "abc", with the length of 3. In depth solution and explanation for leetcode 3. longest substring without repeating characters in python, java, c and more. intuitions, example walk through, and complexity analysis. better than official and forum solutions.

Leetcode Longest Substring Without Repeating Characters Problem Solution Class solution { public: int lengthoflongestsubstring(string s) { int ans = 0; int j = 1; vector lastseen(128, 1); for (int i = 0; i < s.length(); i) { j = max(j, lastseen[s[i]]); ans = max(ans, i j); lastseen[s[i]] = i; } return ans; } };. Solve leetcode 3: longest substring without repeating characters in python with our efficient solution, detailed steps, code, and complexity analysis. master it now!. Given a string s, find the length of the longest substring without repeating characters. example 1 : explanation: the answer is "abc", with the length of 3. example 2 : explanation: the answer is "b", with the length of 1. example 3 : explanation: the answer is "wke", with the length of 3. Class solution: def lengthoflongestsubstring(self, s: str) > int: res = 0 for i in range(len(s)): charset = set() for j in range(i, len(s)): if s[j] in charset: break charset.add(s[j]) res = max(res, len(charset)) return res.

Longest Substring Without Repeating Characters Leet Code Solution Given a string s, find the length of the longest substring without repeating characters. example 1 : explanation: the answer is "abc", with the length of 3. example 2 : explanation: the answer is "b", with the length of 1. example 3 : explanation: the answer is "wke", with the length of 3. Class solution: def lengthoflongestsubstring(self, s: str) > int: res = 0 for i in range(len(s)): charset = set() for j in range(i, len(s)): if s[j] in charset: break charset.add(s[j]) res = max(res, len(charset)) return res. Given a string s, find the length of the longest substring without repeating characters. example 1: output: 3. explanation: the answer is "abc", with the length of 3. example 2: output: 1. explanation: the answer is "b", with the length of 1. example 3: output: 3. explanation: the answer is "wke", with the length of 3. Leetcode 3, longest substring without repeating characters, is a medium level challenge that asks you to find the length of the longest chunk of a string where no character repeats. you’re given a string s, and a substring is a continuous piece of it (no skipping letters). Our strategy for solving the “longest substring without repeating characters” problem combines two fundamental techniques: the sliding window and the hash set. Given a string, find the length of the longest substring without repeating characters. example 1: explanation: the answer is "abc", with the length of 3. example 2: explanation: the answer is "b", with the length of 1. example 3: explanation: the answer is "wke", with the length of 3.

Python 3 X Leetcode Problem Longest Substring Without Repeating Given a string s, find the length of the longest substring without repeating characters. example 1: output: 3. explanation: the answer is "abc", with the length of 3. example 2: output: 1. explanation: the answer is "b", with the length of 1. example 3: output: 3. explanation: the answer is "wke", with the length of 3. Leetcode 3, longest substring without repeating characters, is a medium level challenge that asks you to find the length of the longest chunk of a string where no character repeats. you’re given a string s, and a substring is a continuous piece of it (no skipping letters). Our strategy for solving the “longest substring without repeating characters” problem combines two fundamental techniques: the sliding window and the hash set. Given a string, find the length of the longest substring without repeating characters. example 1: explanation: the answer is "abc", with the length of 3. example 2: explanation: the answer is "b", with the length of 1. example 3: explanation: the answer is "wke", with the length of 3.

Leetcode 0003 Longest Substring Without Repeating Characters Jiechang Guo Our strategy for solving the “longest substring without repeating characters” problem combines two fundamental techniques: the sliding window and the hash set. Given a string, find the length of the longest substring without repeating characters. example 1: explanation: the answer is "abc", with the length of 3. example 2: explanation: the answer is "b", with the length of 1. example 3: explanation: the answer is "wke", with the length of 3.

Leetcode 3 Longest Substring Without Repeating Characters Solution

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Longest Substring Without Repeating Characters - Leetcode 3 - Python

Longest Substring Without Repeating Characters - Leetcode 3 - Python

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