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Tinkoff LeetCode Questions 2026

Browse LeetCode problems frequently asked by Tinkoff. 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
Longest Substring Without Repeating Characters	MEDIUM	87.5%	Hash TableStringSliding Window
Longest Palindromic Substring	MEDIUM	87.5%	Two PointersStringDynamic Programming
Find First and Last Position of Element in Sorted Array	MEDIUM	87.5%	ArrayBinary Search
Rotate Image	MEDIUM	87.5%	ArrayMathMatrix
Simplify Path	MEDIUM	87.5%	StringStack
Search a 2D Matrix	MEDIUM	62.5%	ArrayBinary SearchMatrix
Keys and Rooms	MEDIUM	87.5%	Depth-First SearchBreadth-First SearchGraph Theory
Backspace String Compare	EASY	62.5%	Two PointersStringStackSimulation
Count Square Submatrices with All Ones	MEDIUM	62.5%	ArrayDynamic ProgrammingMatrix
Is Subsequence	EASY	75%	Two PointersStringDynamic Programming
Min Stack	MEDIUM	87.5%	StackDesign
Battleships in a Board	MEDIUM	87.5%	ArrayDepth-First SearchMatrix
Department Highest Salary	MEDIUM	62.5%	Database
Find All Numbers Disappeared in an Array	EASY	75%	ArrayHash Table
Event Emitter	MEDIUM	87.5%
Search in Rotated Sorted Array	MEDIUM	87.5%	ArrayBinary Search
Decode String	MEDIUM	75%	StringStackRecursion
Number of Islands	MEDIUM	87.5%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Form Smallest Number From Two Digit Arrays	EASY	87.5%	ArrayHash TableEnumeration

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