Backtracking | LeetCode Problems

64 Backtracking solutions to LeetCode solutions.

Backtracking Problems View all solutions →

Letter Combinations of a Phone Number

#17 Medium

Generate Parentheses

#22 Medium

Sudoku Solver

#37 Hard

Combination Sum

#39 Medium

Combination Sum II

#40 Medium

Permutations

#46 Medium

Permutations II

#47 Medium

N-Queens

#51 Hard

N-Queens II

#52 Hard

Combinations

#77 Medium

Subsets

#78 Medium

Word Search

#79 Medium

Gray Code

#89 Medium

Subsets II

#90 Medium

Restore IP Addresses

#93 Medium

Unique Binary Search Trees II

#95 Medium

Path Sum II

#113 Medium

Word Ladder II

#126 Hard

Palindrome Partitioning

#131 Medium

Word Break II

#140 Hard

Word Search II

#212 Hard

Combination Sum III

#216 Medium

Binary Tree Paths

#257 Easy

Expression Add Operators

#282 Hard

Remove Invalid Parentheses

#301 Hard

Additive Number

#306 Medium

Count Numbers with Unique Digits

#357 Medium

Binary Watch

#401 Easy

Matchsticks to Square

#473 Medium

Non-decreasing Subsequences

#491 Medium

Target Sum

#494 Medium

Beautiful Arrangement

#526 Medium

Shopping Offers

#638 Medium

24 Game

#679 Hard

Stickers to Spell Word

#691 Hard

Partition to K Equal Sum Subsets

#698 Medium

Sliding Puzzle

#773 Hard

Letter Case Permutation

#784 Medium

All Paths From Source to Target

#797 Medium

Ambiguous Coordinates

#816 Medium

Split Array into Fibonacci Sequence

#842 Medium

Largest Time for Given Digits

#949 Medium

Numbers With Same Consecutive Differences

#967 Medium

Unique Paths III

#980 Hard

Smallest String Starting From Leaf

#988 Medium

Number of Squareful Arrays

#996 Hard

Letter Tile Possibilities

#1079 Medium

Brace Expansion II

#1096 Hard

Path with Maximum Gold

#1219 Medium

Circular Permutation in Binary Representation

#1238 Medium

Maximum Length of a Concatenated String with Unique Characters

#1239 Medium

Tiling a Rectangle with the Fewest Squares

#1240 Hard

Maximum Score Words Formed by Letters

#1255 Hard

Iterator for Combination

#1286 Medium

Verbal Arithmetic Puzzle

#1307 Hard

The k-th Lexicographical String of All Happy Strings of Length n

#1415 Medium

Probability of a Two Boxes Having The Same Number of Distinct Balls

#1467 Hard

Split a String Into the Max Number of Unique Substrings

#1593 Medium

Maximum Number of Achievable Transfer Requests

#1601 Hard

Construct the Lexicographically Largest Valid Sequence

#1718 Medium

Sum of All Subset XOR Totals

#1863 Easy

Find Unique Binary String

#1980 Medium

Construct Smallest Number From DI String

#2375 Medium

Find the Punishment Number of an Integer

#2698 Medium