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 oyo interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Problem database last updated: June 20, 2025
O
oyo Coding Interview Questions
9 problems · 0 Easy, 6 Medium, 3 Hard · Ranked #162 of 458
Difficulty breakdown
0 Easy
0% · avg 23%
6 Medium
67% · avg 59%
3 Hard
33% · avg 18%
Top topics
array
77.8%
two-pointers
22.2%1.6x
sorting
22.2%1.5x
greedy
22.2%2.6x
heap-priority-queue
22.2%3.7x
binary-search
22.2%2.5x
Interview profile
Based on 9 reported problems, oyo interviews are significantly harder than average - 33% Hard vs 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, oyo puts unusual emphasis on heap-priority-queue (22.2% of problems, 3.7x the industry average), greedy (22.2% of problems, 2.6x the industry average), binary-search (22.2% of problems, 2.5x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (77.8%), two-pointers (22.2%), sorting (22.2%), greedy (22.2%). Problems below are sorted by frequency, the ones at the top are asked most often.
All 9 problems
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
4Sum Given an array nums of n integers, return an array of all the unique quadruplets [nums[a], nums[b], nums[c], nums[d]] such that: | Medium | Very Likely | arraytwo-pointerssorting | Solve |
Furthest Building You Can Reach You are given an integer array heights representing the heights of buildings, some bricks, and some ladders. | Medium | Very Likely | arraygreedyheap-priority-queue | Solve |
Largest Rectangle in Histogram Given an array of integers heights representing the histogram's bar height where the width of each bar is 1, return the area of the largest rectangle in the his... | Hard | Very Likely | arraystackmonotonic-stack | Solve |
Maximum Profit in Job Scheduling We have n jobs, where every job is scheduled to be done from startTime[i] to endTime[i], obtaining a profit of profit[i]. | Hard | Very Likely | arraybinary-searchdynamic-programming | Solve |
Sliding Window Maximum You are given an array of integers nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see... | Hard | Very Likely | arrayqueuesliding-window | Solve |
Copy List with Random Pointer A linked list of length n is given such that each node contains an additional random pointer, which could point to any node in the list, or null. | Medium | Very Likely | hash-tablelinked-list | Solve |
Container With Most Water You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]). | Medium | Very Likely | arraytwo-pointersgreedy | Solve |
House Robber III The thief has found himself a new place for his thievery again. There is only one entrance to this area, called root. | Medium | Very Likely | dynamic-programmingtreedepth-first-search | Solve |
Koko Eating Bananas Koko loves to eat bananas. There are n piles of bananas, the ith pile has piles[i] bananas. The guards have gone and will come back in h hours. | Medium | Very Likely | arraybinary-search | Solve |
4Sum
SolveGiven an array nums of n integers, return an array of all the unique quadruplets [nums[a], nums[b], nums[c], nums[d]] such that:
MediumVery Likely
arraytwo-pointerssorting
Furthest Building You Can Reach
SolveYou are given an integer array heights representing the heights of buildings, some bricks, and some ladders.
MediumVery Likely
arraygreedyheap-priority-queue
Largest Rectangle in Histogram
SolveGiven an array of integers heights representing the histogram's bar height where the width of each bar is 1, return the area of the largest rectangle in the his...
HardVery Likely
arraystackmonotonic-stack
Maximum Profit in Job Scheduling
SolveWe have n jobs, where every job is scheduled to be done from startTime[i] to endTime[i], obtaining a profit of profit[i].
HardVery Likely
arraybinary-searchdynamic-programming
Sliding Window Maximum
SolveYou are given an array of integers nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see...
HardVery Likely
arrayqueuesliding-window
Copy List with Random Pointer
SolveA linked list of length n is given such that each node contains an additional random pointer, which could point to any node in the list, or null.
MediumVery Likely
hash-tablelinked-list
Container With Most Water
SolveYou are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the ith line are (i, 0) and (i, height[i]).
MediumVery Likely
arraytwo-pointersgreedy
House Robber III
SolveThe thief has found himself a new place for his thievery again. There is only one entrance to this area, called root.
MediumVery Likely
dynamic-programmingtreedepth-first-search
Koko Eating Bananas
SolveKoko loves to eat bananas. There are n piles of bananas, the ith pile has piles[i] bananas. The guards have gone and will come back in h hours.
MediumVery Likely
arraybinary-search
Preparing for your oyo coding interview
oyo interviews focus heavily on array, two-pointers, sorting 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. oyo 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 oyo ask in interviews?add
oyo has been reported to ask 9 distinct coding problems. The most common topics are array, two-pointers, sorting. 0 are Easy difficulty, 6 are Medium, and 3 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
How hard are oyo coding interviews?add
Based on 9 reported problems, oyo interviews are significantly harder than average - 33% Hard vs 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 oyo coding interview?add
Start with the highest-frequency problems listed on this page. Focus on the core topics: array, two-pointers, sorting. 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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