Problem database last updated: June 20, 2025
15 problems · 4 Easy, 9 Medium, 2 Hard · Ranked #112 of 458
4 Easy
27% · avg 23%
9 Medium
60% · avg 59%
2 Hard
13% · avg 18%
Based on 15 reported problems, Mitsogo interviews are in line with industry averages - 13% Hard vs 18% overall. The majority (60%) 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, Mitsogo puts unusual emphasis on bit-manipulation (20% of problems, 5.9x the industry average), counting (13.3% of problems, 4x the industry average), sliding-window (13.3% of problems, 2.8x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (73.3%), dynamic-programming (40%), string (33.3%), bit-manipulation (20%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Right Triangles You are given a 2D boolean matrix grid. | Medium | Very Likely | arrayhash-tablemath | Solve |
Minimum Substring Partition of Equal Character Frequency Given a string s, you need to partition it into one or more balanced substrings. For example, if s == "ababcc" then ("abab", "c", "c"), ("ab", "abc", "c"), and... | Medium | Very Likely | hash-tablestringdynamic-programming | Solve |
Construct String with Minimum Cost You are given a string target, an array of strings words, and an integer array costs, both arrays of the same length. | Hard | Very Likely | arraystringdynamic-programming | Solve |
Maximum Total Reward Using Operations I You are given an integer array rewardValues of length n, representing the values of rewards. | Medium | Very Likely | arraydynamic-programming | Solve |
Maximum Total Reward Using Operations II You are given an integer array rewardValues of length n, representing the values of rewards. | Hard | Very Likely | arraydynamic-programmingbit-manipulation | Solve |
Shortest Subarray With OR at Least K II You are given an array nums of non-negative integers and an integer k. | Medium | Very Likely | arraybit-manipulationsliding-window | Solve |
Shortest Subarray With OR at Least K I You are given an array nums of non-negative integers and an integer k. | Easy | Very Likely | arraybit-manipulationsliding-window | Solve |
Find the Integer Added to Array I You are given two arrays of equal length, nums1 and nums2. | Easy | Very Likely | array | Solve |
Find the Integer Added to Array II You are given two integer arrays nums1 and nums2. | Medium | Very Likely | arraytwo-pointerssorting | Solve |
Pascal's Triangle Given an integer numRows, return the first numRows of Pascal's triangle. | Easy | Likely | arraydynamic-programming | Solve |
Next Permutation A permutation of an array of integers is an arrangement of its members into a sequence or linear order. | Medium | Likely | arraytwo-pointers | Solve |
Jump Game II You are given a 0-indexed array of integers nums of length n. You are initially positioned at index 0. | Medium | Likely | arraydynamic-programminggreedy | Solve |
Zigzag Conversion The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better... | Medium | Likely | string | Solve |
Next Greater Element III Given a positive integer n, find the smallest integer which has exactly the same digits existing in the integer n and is greater in value than n. If no such pos... | Medium | Likely | mathtwo-pointersstring | Solve |
Valid Parentheses Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. | Easy | Likely | stringstack | Solve |
Minimum Substring Partition of Equal Character Frequency
SolveGiven a string s, you need to partition it into one or more balanced substrings. For example, if s == "ababcc" then ("abab", "c", "c"), ("ab", "abc", "c"), and...
Construct String with Minimum Cost
SolveYou are given a string target, an array of strings words, and an integer array costs, both arrays of the same length.
Maximum Total Reward Using Operations I
SolveYou are given an integer array rewardValues of length n, representing the values of rewards.
Maximum Total Reward Using Operations II
SolveYou are given an integer array rewardValues of length n, representing the values of rewards.
Shortest Subarray With OR at Least K II
SolveYou are given an array nums of non-negative integers and an integer k.
Shortest Subarray With OR at Least K I
SolveYou are given an array nums of non-negative integers and an integer k.
Find the Integer Added to Array I
SolveYou are given two arrays of equal length, nums1 and nums2.
Find the Integer Added to Array II
SolveYou are given two integer arrays nums1 and nums2.
Pascal's Triangle
SolveGiven an integer numRows, return the first numRows of Pascal's triangle.
Next Permutation
SolveA permutation of an array of integers is an arrangement of its members into a sequence or linear order.
Jump Game II
SolveYou are given a 0-indexed array of integers nums of length n. You are initially positioned at index 0.
Zigzag Conversion
SolveThe string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better...
Next Greater Element III
SolveGiven a positive integer n, find the smallest integer which has exactly the same digits existing in the integer n and is greater in value than n. If no such pos...
Valid Parentheses
SolveGiven a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Mitsogo interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Mitsogo interviews focus heavily on array, dynamic-programming, string 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. Mitsogo 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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Mitsogo has been reported to ask 15 distinct coding problems. The most common topics are array, dynamic-programming, string. 4 are Easy difficulty, 9 are Medium, and 2 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
Based on 15 reported problems, Mitsogo interviews are in line with industry averages - 13% Hard vs 18% overall. 60% 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, dynamic-programming, string. 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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