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Google LeetCode Questions 2026

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

Last updated: 20 Feb 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Two Sum	EASY	100%	ArrayHash Table
Add Two Numbers	MEDIUM	75%	Linked ListMathRecursion
Longest Substring Without Repeating Characters	MEDIUM	75%	Hash TableStringSliding Window
Median of Two Sorted Arrays	HARD	75%	ArrayBinary SearchDivide and Conquer
String to Integer (atoi)	MEDIUM	37.5%	String
Integer to Roman	MEDIUM	37.5%	Hash TableMathString
Longest Common Prefix	EASY	75%	ArrayStringTrie
3Sum Closest	MEDIUM	50%	ArrayTwo PointersSorting
4Sum	MEDIUM	50%	ArrayTwo PointersSorting
Valid Parentheses	EASY	62.5%	StringStack
Find the Index of the First Occurrence in a String	EASY	50%	Two PointersStringString Matching
Search in Rotated Sorted Array	MEDIUM	62.5%	ArrayBinary Search
First Missing Positive	HARD	50%	ArrayHash Table
Trapping Rain Water	HARD	75%	ArrayTwo PointersDynamic ProgrammingStackMonotonic Stack
Wildcard Matching	HARD	37.5%	StringDynamic ProgrammingGreedyRecursion
Jump Game II	MEDIUM	50%	ArrayDynamic ProgrammingGreedy
Rotate Image	MEDIUM	50%	ArrayMathMatrix
Group Anagrams	MEDIUM	50%	ArrayHash TableStringSorting
N-Queens II	HARD	25%	Backtracking
Maximum Subarray	MEDIUM	62.5%	ArrayDivide and ConquerDynamic Programming

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