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Showing 1-19 of 19 matching problems in NeetCode 250.

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Array141Dynamic Programming55String53

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Title	Difficulty	Topics
17. Letter Combinations of a Phone Number Open source	Medium	Hash TableStringBacktracking
22. Generate Parentheses Open source	Medium	StringDynamic ProgrammingBacktracking+1 more
39. Combination Sum Open source	Medium	ArrayBacktracking
40. Combination Sum II Open source	Medium	ArrayBacktracking
46. Permutations Open source	Medium	ArrayBacktracking
47. Permutations II Open source	Medium	ArrayBacktrackingSorting
51. N-Queens Open source	Hard	ArrayBacktrackingAlgorithm X
52. N-Queens II Open source	Hard	BacktrackingAlgorithm X
77. Combinations Open source	Medium	Backtracking
78. Subsets Open source	Medium	ArrayBacktrackingBit Manipulation
79. Word Search Open source	Medium	ArrayStringBacktracking+2 more
90. Subsets II Open source	Medium	ArrayBacktrackingBit Manipulation
131. Palindrome Partitioning Open source	Medium	StringDynamic ProgrammingBacktracking
140. Word Break II Open source	Hard	ArrayHash TableString+4 more
212. Word Search II Open source	Hard	ArrayStringBacktracking+2 more
473. Matchsticks to Square Open source	Medium	ArrayDynamic ProgrammingBacktracking+2 more
494. Target Sum Open source	Medium	ArrayDynamic ProgrammingBacktracking+2 more
698. Partition to K Equal Sum Subsets Open source	Medium	ArrayDynamic ProgrammingBacktracking+3 more
1863. Sum of All Subset XOR Totals Open source	Easy	ArrayMathBacktracking+3 more