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.

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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: 121 reads as …

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? Valid Parentheses - Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: 1. Open …

Crack SQL Interview in 50 Qs

Can you solve this real interview question? Time Needed to Buy Tickets - There are n people in a line queuing to buy tickets, where the 0th person is at the front of the line and the (n - 1)th person is at …

Must-do List for Interview Prep

Can you solve this real interview question? Flatten a Multilevel Doubly Linked List - You are given a doubly linked list, which contains nodes that have a next pointer, a previous pointer, and an …