How often are these problems asked?
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Valve interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Problem database last updated: June 20, 2025
V
Valve Coding Interview Questions
3 problems · 1 Easy, 2 Medium, 0 Hard · Ranked #342 of 458
Difficulty breakdown
1 Easy
33% · avg 23%
2 Medium
67% · avg 59%
0 Hard
0% · avg 18%
Top topics
string
66.7%2.4x
greedy
33.3%3.9x
queue
33.3%23.1x
design
33.3%5.8x
simulation
33.3%7.7x
counting
33.3%10x
Interview profile
Based on 3 reported problems, Valve interviews are easier than average - only 0% Hard compared to 18% across all companies. The majority (67%) of questions are Medium difficulty, which is typical for companies that want to see solid fundamentals without excessive trick questions.
Compared to the industry average, Valve puts unusual emphasis on string (66.7% of problems, 2.4x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are string (66.7%), greedy (33.3%), queue (33.3%), design (33.3%). Problems below are sorted by frequency, the ones at the top are asked most often.
All 3 problems
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Dota2 Senate In the world of Dota2, there are two parties: the Radiant and the Dire. | Medium | Very Likely | stringgreedyqueue | Solve |
String to Integer (atoi) Implement the myAtoi(string s) function, which converts a string to a 32-bit signed integer. | Medium | Very Likely | string | Solve |
Design Parking System Design a parking system for a parking lot. The parking lot has three kinds of parking spaces: big, medium, and small, with a fixed number of slots for each size... | Easy | Likely | designsimulationcounting | Solve |
Dota2 Senate
SolveIn the world of Dota2, there are two parties: the Radiant and the Dire.
MediumVery Likely
stringgreedyqueue
String to Integer (atoi)
SolveImplement the myAtoi(string s) function, which converts a string to a 32-bit signed integer.
MediumVery Likely
string
Design Parking System
SolveDesign a parking system for a parking lot. The parking lot has three kinds of parking spaces: big, medium, and small, with a fixed number of slots for each size...
EasyLikely
designsimulationcounting
Preparing for your Valve coding interview
Valve interviews focus heavily on string, greedy, queue problems. If you're short on time, these are the categories to prioritize. The problems on this page are sorted by frequency, so start from the top and work your way down.
Beyond solving problems, practice explaining your approach. Valve interviewers care about your thought process - how you break down a problem, consider edge cases, and evaluate tradeoffs between solutions. A clean O(n) solution you can explain clearly beats an O(log n) solution you can't articulate.
Looking for more companies? Browse all 458 companies in our directory, or sharpen your fundamentals with our free data structure visualizers and AI-powered DSA tutor.
Frequently Asked Questions
What coding problems does Valve ask in interviews?add
Valve has been reported to ask 3 distinct coding problems. The most common topics are string, greedy, queue. 1 are Easy difficulty, 2 are Medium, and 0 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
How hard are Valve coding interviews?add
Based on 3 reported problems, Valve interviews are easier than average - only 0% Hard compared to 18% across all companies. 67% of questions are Medium difficulty. Focus on the high-frequency Medium problems first, then work through the Hard ones.
How should I prepare for a Valve coding interview?add
Start with the highest-frequency problems listed on this page. Focus on the core topics: string, greedy, queue. Practice solving them under time pressure and explaining your approach out loud. Mock interviews with AI can simulate the real experience.
Other companies to explore
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