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Barclays LeetCode Questions 2026

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

Last updated: 20 Feb 2026

ProblemDifficultyFrequencyTopics
Count Submatrices with Top-Left Element and Sum Less Than kMEDIUM
100%
ArrayMatrixPrefix Sum
Double Modular ExponentiationMEDIUM
100%
ArrayMathSimulation
Furthest Point From OriginEASY
100%
StringCounting
Mark Elements on Array by Performing QueriesMEDIUM
100%
ArrayHash TableSortingHeap (Priority Queue)Simulation
Lexicographical NumbersMEDIUM
62.5%
Depth-First SearchTrie
Valid ParenthesesEASY
62.5%
StringStack
Climbing StairsEASY
62.5%
MathDynamic ProgrammingMemoization
Number of IslandsMEDIUM
62.5%
ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Lexicographically Smallest Generated StringHARD
100%
StringGreedyString Matching
Second Highest SalaryMEDIUM
62.5%
Database
Longest Common PrefixEASY
62.5%
ArrayStringTrie
Next Greater Element IEASY
62.5%
ArrayHash TableStackMonotonic Stack
Reverse Words in a StringMEDIUM
62.5%
Two PointersString
Minimum Number of Days to Make m BouquetsMEDIUM
62.5%
ArrayBinary Search

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