5. Longest Palindromic Substring Problem Given a string s, return the longest palindromic substring in s. A string is palindromic if it reads the same forwar... 2024-11-10 medium
540. Single Element in a Sorted Array Problem You are given a sorted array consisting of only integers where every element appears exactly twice, except for one el... 2024-11-10 medium
3. Longest Substring Without Repeating Characters Problem Given a string s, find the length of the longest substring without repeating characters. A substring is a contiguous... 2024-11-10 medium
3242. Design Neighbor Sum Service Problem You are given a n x n 2D array grid containing distinct elements in the range [0, n² - 1]. Implement the NeighborSum ... 2024-11-09 easy
1. Two Sum Problem Given an array of integers nums and an integer target, return indices of the two numbers such that they add up t... 2024-11-09 easy
128. Longest Consecutive Sequence Problem Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence. You must wr... 2024-11-09 medium
3235. Check if the Rectangle Corner Is Reachable Problem You are given two positive integers xCorner and yCorner, and a 2D array circles, where circles[i] = [xᵢ, yᵢ, rᵢ] deno... 2024-11-09 hard difficult
