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Deloitte LeetCode Questions 2026

Browse LeetCode problems frequently asked by Deloitte. 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
Reverse Integer	MEDIUM	50%	Math
Palindrome Number	EASY	75%	Math
Valid Parentheses	EASY	75%	StringStack
Climbing Stairs	EASY	50%	MathDynamic ProgrammingMemoization
Best Time to Buy and Sell Stock	EASY	75%	ArrayDynamic Programming
Change Null Values in a Table to the Previous Value	MEDIUM	87.5%	Database
Majority Element	EASY	50%	ArrayHash TableDivide and ConquerSortingCounting
Managers with at Least 5 Direct Reports	MEDIUM	62.5%	Database
Longest Palindromic Substring	MEDIUM	87.5%	Two PointersStringDynamic Programming
Longest Common Prefix	EASY	62.5%	ArrayStringTrie
Merge k Sorted Lists	HARD	100%	Linked ListDivide and ConquerHeap (Priority Queue)Merge Sort
Second Highest Salary	MEDIUM	87.5%	Database
Edit Distance	MEDIUM	50%	StringDynamic Programming
Minimum Time to Repair Cars	MEDIUM	50%	ArrayBinary Search
Coin Change	MEDIUM	50%	ArrayDynamic ProgrammingBreadth-First Search
Rising Temperature	EASY	62.5%	Database
Container With Most Water	MEDIUM	62.5%	ArrayTwo PointersGreedy
Max Consecutive Ones	EASY	50%	Array
Kth Largest Element in an Array	MEDIUM	50%	ArrayDivide and ConquerSortingHeap (Priority Queue)Quickselect

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