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Enhance your coding abilities and get valuable real-world feedback by participating in contests on LeetCode. You can also win up to 5000 LeetCoins per contest, as well as bonus prizes from …

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Can you solve this real interview question? Palindrome Number - Given an integer x, return true if x is a palindrome, and false otherwise. Example 1: Input: x = 121 Output: true Explanation: …

Can you solve this real interview question? Valid Parentheses - Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid …

Can you solve this real interview question? Find First and Last Position of Element in Sorted Array - Given an array of integers nums sorted in non-decreasing order, find the starting and ending …

Can you solve this real interview question? Best Time to Buy and Sell Stock II - You are given an integer array prices where prices[i] is the price of a given stock on the ith day. On each day, …

Code Editor LeetCode is working on providing the best online coding experience for you. In the code editor, we start you off with default code templates based on the question and your …

Can you solve this real interview question? Word Break - Given a string s and a dictionary of strings wordDict, return true if s can be segmented into a space-separated sequence of one or …