Browse LeetCode problems frequently asked by Valve. Filter by difficulty and timeframe to focus your interview prep.
Last updated: 20 Feb 2026
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30 days
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All
Easy
Medium
Hard
All
Problem
Difficulty
Frequency
Topics
Dota2 Senate
MEDIUM
100%
StringGreedyQueue
Deep Merge of Two Objects
MEDIUM
62.5%
Design Parking System
EASY
62.5%
DesignSimulationCounting
String to Integer (atoi)
MEDIUM
87.5%
String
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