Practice with authentic coding interview questions asked at Google, Amazon, Microsoft, Meta, Apple, and other top tech companies. Get detailed solutions, explanations, and preparation strategies from real software engineer interviews.
Given an array of integers and a target sum, find two numbers that add up to the target. This is one of the most commonly asked questions in technical interviews...
Given the root of a binary tree, return the level order traversal of its nodes' values. This problem tests your understanding of tree traversal algorithms...
Given a string, find the length of the longest substring without repeating characters. This problem is frequently asked to test sliding window technique...
Given an array of intervals, merge all overlapping intervals and return an array of non-overlapping intervals. This tests interval manipulation skills...
Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. Stack-based problem commonly asked...
Given an integer array, find the contiguous subarray with the largest sum. This classic problem introduces dynamic programming concepts...
Given the head of a singly linked list, reverse the list and return the reversed list. Fundamental linked list manipulation problem...
You are given an integer array sorted in ascending order, but rotated at some pivot. Search for a target value efficiently...
You are climbing a staircase. It takes n steps to reach the top. Each time you can climb 1 or 2 steps. How many distinct ways are there...
Given an array of strings, group the anagrams together. An anagram is a word formed by rearranging letters of another word...
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