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EPAM Systems SDE 1

The 49 highest-frequency questions from all time. Finish the strongest signals first.

Updated weekly · Latest source check: 13 Oct 2026ⓘLatest successful check of the sources used by this company. A check does not necessarily mean the questions changed.

One question at a time.

Top questions 49

Done	Question	LeetCode
Mark Two Sum completed	Two Sum	Solve
Mark Longest Substring Without Repeating Characters completed	Longest Substring Without Repeating Characters	Solve
Mark Minimum Operations to Make a Uni-Value Grid completed	Minimum Operations to Make a Uni-Value Grid	Solve
Mark Move Zeroes completed	Move Zeroes	Solve
Mark Longest Common Prefix completed	Longest Common Prefix	Solve
Mark Longest Palindromic Substring completed	Longest Palindromic Substring	Solve
Mark Merge Sorted Array completed	Merge Sorted Array	Solve
Mark Group Anagrams completed	Group Anagrams	Solve
Mark Valid Anagram completed	Valid Anagram	Solve
Mark Valid Parentheses completed	Valid Parentheses	Solve
Mark Decode Ways completed	Decode Ways	Solve
Mark Best Time to Buy and Sell Stock completed	Best Time to Buy and Sell Stock	Solve
Mark First Unique Character in a String completed	First Unique Character in a String	Solve
Mark Rotate Array completed	Rotate Array	Solve
Mark 3Sum completed	3Sum	Solve
Mark Generate Parentheses completed	Generate Parentheses	Solve
Mark Longest Consecutive Sequence completed	Longest Consecutive Sequence	Solve
Mark Max Consecutive Ones III completed	Max Consecutive Ones III	Solve
Mark Merge Intervals completed	Merge Intervals	Solve
Mark Query Kth Smallest Trimmed Number completed	Query Kth Smallest Trimmed Number	Solve
Mark Reverse Integer completed	Reverse Integer	Solve
Mark Reverse String completed	Reverse String	Solve
Mark Reverse Vowels of a String completed	Reverse Vowels of a String	Solve
Mark String Compression completed	String Compression	Solve
Mark Trapping Rain Water completed	Trapping Rain Water	Solve
Mark Add Two Numbers completed	Add Two Numbers	Solve
Mark Count Salary Categories completed	Count Salary Categories	Solve
Mark Counter completed	Counter	Solve
Mark Duplicate Emails completed	Duplicate Emails	Solve
Mark Edit Distance completed	Edit Distance	Solve
Mark First Missing Positive completed	First Missing Positive	Solve
Mark House Robber completed	House Robber	Solve
Mark Kth Largest Element in an Array completed	Kth Largest Element in an Array	Solve
Mark Longest Increasing Path in a Matrix completed	Longest Increasing Path in a Matrix	Solve
Mark LRU Cache completed	LRU Cache	Solve
Mark Maximum Difference Between Node and Ancestor completed	Maximum Difference Between Node and Ancestor	Solve
Mark Maximum Subarray completed	Maximum Subarray	Solve
Mark Merge Two Sorted Lists completed	Merge Two Sorted Lists	Solve
Mark Multiply Strings completed	Multiply Strings	Solve
Mark Palindrome Number completed	Palindrome Number	Solve
Mark Pow(x, n) completed	Pow(x, n)	Solve
Mark Remove K Digits completed	Remove K Digits	Solve
Mark Reverse Linked List completed	Reverse Linked List	Solve
Mark Reverse Words in a String completed	Reverse Words in a String	Solve
Mark Roman to Integer completed	Roman to Integer	Solve
Mark Sort Characters By Frequency completed	Sort Characters By Frequency	Solve
Mark Top K Frequent Elements completed	Top K Frequent Elements	Solve
Mark Two Sum II - Input Array Is Sorted completed	Two Sum II - Input Array Is Sorted	Solve
Mark Unique Paths completed	Unique Paths	Solve