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