Recursion & Backtracking
Pure recursion fundamentals, then subsets/permutations/combinations, grid and board backtracking, string partitioning, and hard constraint-satisfaction problems.
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| Problem | Difficulty | Platform | Revision | Action | |
|---|---|---|---|---|---|
| Medium | LC | Solve | |||
| Easy | LC | Solve | |||
| Easy | LC | Solve | |||
| Medium | LC | Solve | |||
| Easy | LC | Solve | |||
| Medium | LC | Solve |
Reverse String
EasyLC
Fibonacci Number
EasyLC
Generate Parentheses
MediumLC
Binary Tree Paths
EasyLC
Letter Case Permutation
MediumLC