Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.

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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Must-do List for Interview Prep

Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview.

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: …

LeetCode 75 Summary 75 Essential & Trending Problems Must-do problem list for interview prep Best for 1~3 month of prep time

Sep 23, 2025 · Join LeetCode Discuss for coding insights, learning opportunities, and networking with fellow programmers in a vibrant community.

Given an integer array nums and an integer k, return the k most frequent elements. You may return the answer in any order. Example 1: