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Yandex Master DSA Sheet

This compilation contains exclusive, previously asked data structure and algorithm questions from real Yandex interviews. Focus on these core problem patterns to confidently tackle even the hardest interview challenges.

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134
Min Stack6 Months
Medium
Valid Parentheses
Easy
Destination City
Easy
Reverse Linked List
Easy
Longest Subarray of 1's After Deleting One Element30 Days
Medium
Trapping Rain Water6 Months
Hard
Maximize Distance to Closest Person30 Days
Medium
Longest Substring Without Repeating Characters30 Days
Medium
Generate Parentheses
Medium
Product of Array Except Self3 Months
Medium
Find K Closest Elements6 Months
Medium
Merge Intervals
Medium
Longest Palindromic Substring6 Months
Medium
Find All Anagrams in a String3 Months
Medium
Daily Temperatures
Medium
Valid Palindrome II3 Months
Easy
Minimum Window Substring
Hard
Find the Prefix Common Array of Two Arrays6 Months
Medium
One Edit Distance6 Months
Medium
Basic Calculator II
Medium
Line Reflection3 Months
Medium
Permutation in String3 Months
Medium
Longest Repeating Character Replacement
Medium
Longest Strictly Increasing or Strictly Decreasing Subarray3 Months
Easy
Merge Sorted Array6 Months
Easy
String Compression6 Months
Medium
Isomorphic Strings6 Months
Easy
LRU Cache6 Months
Medium
Roman to Integer
Easy
Rotting Oranges
Medium
Two Sum II - Input Array Is Sorted
Medium
Move Zeroes6 Months
Easy
Maximum Subarray
Medium
Design an ATM Machine6 Months
Medium
Container With Most Water3 Months
Medium
Insert Delete GetRandom O(1)6 Months
Medium
Interval List Intersections6 Months
Medium
Search in Rotated Sorted Array6 Months
Medium
Squares of a Sorted Array
Easy
Number of Islands6 Months
Medium
Two Sum6 Months
Easy
Best Time to Buy and Sell Stock
Easy
Group Anagrams6 Months
Medium
Symmetric Tree
Easy
Median of Two Sorted Arrays
Hard
Valid Anagram
Easy
Design Hit Counter
Medium
Lowest Common Ancestor of a Binary Tree
Medium
Binary Tree Right Side View
Medium
Majority Element
Easy
Subarray Sum Equals K30 Days
Medium
Valid Palindrome3 Months
Easy
Binary Tree Maximum Path Sum
Hard
Max Consecutive Ones III6 Months
Medium
Simplify Path
Medium
Longest Substring with At Most K Distinct Characters6 Months
Medium
Merge k Sorted Lists
Hard
Find Duplicate Subtrees6 Months
Medium
Reconstruct Itinerary
Hard
Palindrome Number
Easy
Add Two Numbers
Medium
Number of Recent Calls
Easy
Count Substrings Without Repeating Character
Medium
Monotonic Array
Easy
Top K Frequent Elements
Medium
Merge Two Sorted Lists
Easy
Letter Combinations of a Phone Number
Medium
Perfect Squares
Medium
Lowest Common Ancestor of a Binary Search Tree
Medium
Find Minimum in Rotated Sorted Array
Medium
Balanced Binary Tree
Easy
Find Median from Data Stream
Hard
Palindrome Linked List
Easy
Minimum Size Subarray Sum
Medium
Sliding Window Maximum
Hard
Implement Queue using Stacks
Easy
Is Subsequence6 Months
Easy
4Sum
Medium
First Unique Character in a String
Easy
Remove Duplicates from Sorted Array
Easy
Can Place Flowers
Easy
Intersection of Two Arrays II
Easy
Summary Ranges30 Days
Easy
Debounce
Medium
Allow One Function Call
Easy
Range Sum of BST
Easy
Longest Continuous Increasing Subsequence
Easy
Cinema Seat Allocation
Medium
Function Composition3 Months
Easy
Product of Two Run-Length Encoded Arrays
Medium
Reverse Integer
Medium
Text Justification
Hard
Jewels and Stones
Easy
Intersection of Two Arrays
Easy
Search Insert Position
Easy
Binary Tree Zigzag Level Order Traversal
Medium
Matrix Diagonal Sum
Easy
Path Crossing
Easy
Add Strings
Easy
Max Consecutive Ones
Easy
Remove Nth Node From End of List
Medium
Longest Increasing Subsequence
Medium
Validate Binary Search Tree
Medium
Remove Element
Easy
Continuous Subarray Sum
Medium
Coin Change
Medium
Max Number of K-Sum Pairs
Medium
Counter II
Easy
Search a 2D Matrix
Medium
Employees Earning More Than Their Managers
Easy
Maximum Sum of Almost Unique Subarray
Medium
Partition Labels
Medium
Binary Tree Level Order Traversal
Medium
Create Hello World Function
Easy
Swap Nodes in Pairs
Medium
Subarray Sums Divisible by K
Medium
Maximum Average Subarray I6 Months
Easy
Max Consecutive Ones II
Medium
Longest Substring with At Least K Repeating Characters
Medium
Single Number
Easy
Implement Rand10() Using Rand7()
Medium
Linked List Cycle
Easy
Find Common Elements Between Two Arrays
Easy
Find the Difference of Two Arrays
Easy
Evaluate Reverse Polish Notation
Medium
Count Number of Pairs With Absolute Difference K
Easy
Design an Ordered Stream
Easy
Flatten Nested List Iterator
Medium
Merge Two 2D Arrays by Summing Values
Easy
Simple Bank System
Medium
Boats to Save People
Medium
Contains Duplicate III
Hard
Lowest Common Ancestor of a Binary Tree III
Medium
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit6 Months
Medium