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Backtracking Interview Questions

22 Backtracking problems asked across FAANG and top tech companies. Approach hints, optimal solutions, and related problems.

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Backtracking 22
BacktrackingClear all
22.Generate Parentheses
StringDynamic ProgrammingBacktracking
Medium+1▶ Mock
79.Word Search
ArrayStringBacktracking
Medium+1▶ Mock
17.Letter Combinations of a Phone Number
Hash TableStringBacktracking
Medium+1▶ Mock
78.Subsets
ArrayBacktrackingBit Manipulation
Medium▶ Mock
40.Combination Sum II
ArrayBacktracking
Medium▶ Mock
39.Combination Sum
ArrayBacktracking
Medium▶ Mock
797.All Paths From Source to Target
BacktrackingDepth-First SearchBreadth-First Search
Medium▶ Mock
526.Beautiful Arrangement
ArrayDynamic ProgrammingBacktracking
Medium▶ Mock
131.Palindrome Partitioning
StringDynamic ProgrammingBacktracking
Medium▶ Mock
46.Permutations
ArrayBacktracking
Medium▶ Mock
93.Restore IP Addresses
StringBacktracking
Medium▶ Mock
51.N-Queens
ArrayBacktrackingAlgorithm X
Hard▶ Mock
465.Optimal Account Balancing
ArrayDynamic ProgrammingBacktracking
Hard▶ Mock
1258.Synonymous Sentences
ArrayHash TableString
Medium▶ Mock
980.Unique Paths III
ArrayBacktrackingBit Manipulation
Hard▶ Mock
140.Word Break II
ArrayHash TableString
Hard▶ Mock
Word Search II
ArrayStringBacktracking
Hard+1▶ Mock
257.Binary Tree Paths
StringBacktrackingTree
Easy▶ Mock
282.Expression Add Operators
MathStringBacktracking
Hard▶ Mock
494.Target Sum
ArrayDynamic ProgrammingBacktracking
Medium▶ Mock
773.Sliding Puzzle
ArrayDynamic ProgrammingBacktracking
Hard▶ Mock
1087.Brace Expansion
StringBacktrackingBreadth-First Search
Medium▶ Mock

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