Problem database last updated: June 20, 2025
4 problems · 0 Easy, 2 Medium, 2 Hard · Ranked #274 of 458
0 Easy
0% · avg 23%
2 Medium
50% · avg 59%
2 Hard
50% · avg 18%
Based on 4 reported problems, Works Applications interviews are significantly harder than average - 50% Hard vs 18% across all companies.
Compared to the industry average, Works Applications puts unusual emphasis on greedy (50% of problems, 5.9x the industry average), sorting (75% of problems, 5.2x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (75%), sorting (75%), greedy (50%), two-pointers (25%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
3Sum Given an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j != k, and nums[i] + nums[j] + nums[k] == 0. | Medium | Very Likely | arraytwo-pointerssorting | Solve |
Largest Number Given a list of non-negative integers nums, arrange them such that they form the largest number and return it. | Medium | Very Likely | arraystringgreedy | Solve |
Course Schedule III There are n different online courses numbered from 1 to n. You are given an array courses where courses[i] = [durationi, lastDayi] indicate that the ith course... | Hard | Very Likely | arraygreedysorting | Solve |
K Inverse Pairs Array For an integer array nums, an inverse pair is a pair of integers [i, j] where 0 <= i < j < nums.length and nums[i] > nums[j]. | Hard | Very Likely | dynamic-programming | Solve |
3Sum
SolveGiven an integer array nums, return all the triplets [nums[i], nums[j], nums[k]] such that i != j, i != k, and j != k, and nums[i] + nums[j] + nums[k] == 0.
Largest Number
SolveGiven a list of non-negative integers nums, arrange them such that they form the largest number and return it.
Course Schedule III
SolveThere are n different online courses numbered from 1 to n. You are given an array courses where courses[i] = [durationi, lastDayi] indicate that the ith course...
K Inverse Pairs Array
SolveFor an integer array nums, an inverse pair is a pair of integers [i, j] where 0 <= i < j < nums.length and nums[i] > nums[j].
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Works Applications interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Works Applications interviews focus heavily on array, sorting, greedy 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. Works Applications 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.
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Works Applications has been reported to ask 4 distinct coding problems. The most common topics are array, sorting, greedy. 0 are Easy difficulty, 2 are Medium, and 2 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
Based on 4 reported problems, Works Applications interviews are significantly harder than average - 50% Hard vs 18% across all companies. 50% of questions are Medium difficulty. Focus on the high-frequency Medium problems first, then work through the Hard ones.
Start with the highest-frequency problems listed on this page. Focus on the core topics: array, sorting, greedy. Practice solving them under time pressure and explaining your approach out loud. Mock interviews with AI can simulate the real experience.
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