Today’s problem is a common but tricky one! I will explain the problem in this challenge and provide two solutions with explanations. Given a string s, the task is to find the length of the longest ...

My LeetCode Diary: #3 Longest Substring without Repeating Characters Wow, look at that! This was my first ever 5-minute solve. Maybe I’m just good with strings. Must be all the threading I’m doing.

Given "abcabcbb", the answer is "abc", which the length is 3. Given "bbbbb", the answer is "b", with the length of 1. Given "pwwkew", the answer is "wke", with the ...

Finds the smallest substring containing the characters of a given string in O(n+m) time complexity. Utilizing a sliding window algorithm. Java Solution Instructions: Given two strings s and t of ...