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Epic Systems LeetCode Questions 2026

Browse LeetCode problems frequently asked by Epic Systems. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 10 July 2026

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Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Letter Combinations of a Phone Number	MEDIUM	87.5%	Hash TableStringBacktracking
Valid Parentheses	EASY	87.5%	StringStack
Spiral Matrix	MEDIUM	87.5%	ArrayMatrixSimulation
Additive Number	MEDIUM	100%	StringBacktracking
Word Search	MEDIUM	62.5%	ArrayStringBacktrackingDepth-First SearchMatrix
Stepping Numbers	MEDIUM	87.5%	MathBacktrackingBreadth-First Search
Self Dividing Numbers	EASY	87.5%	Math
Angle Between Hands of a Clock	MEDIUM	75%	Math
Bulls and Cows	MEDIUM	62.5%	Hash TableStringCounting
Two Sum	EASY	62.5%	ArrayHash Table
Palindromic Substrings	MEDIUM	50%	Two PointersStringDynamic Programming
Permutations	MEDIUM	50%	ArrayBacktracking
Longest Palindromic Substring	MEDIUM	50%	Two PointersStringDynamic Programming
Count Primes	MEDIUM	62.5%	ArrayMathEnumerationNumber Theory
Longest Increasing Path in a Matrix	HARD	50%	ArrayDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph TheoryTopological SortMemoizationMatrix

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