Ace Your Technical Interviews
Prepare for technical interviews with pattern-based practice, real interview questions, and insider tips from top tech companies.
Difficulty
Companies
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Find all pairs with a given sum
EasyTwo Pointers
Given an array of integers, find all pairs of elements that sum to a target value.
Maximum sum subarray of size K
EasySliding Window
Find the maximum sum of any contiguous subarray of size K.
Longest substring with K distinct characters
MediumSliding Window
Find the longest substring with exactly K distinct characters.