0017. Letter Combinations of a Phone Number
Backtracking / Iterative — Interactive Visualization
Backtracking (DFS)
Iterative (BFS)
Digits (2-9):
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5x
2
abc
3
def
4
ghi
5
jkl
6
mno
7
pqrs
8
tuv
9
wxyz
Current Combination
Backtracking Tree (DFS)
Found Combinations (
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| Combinations:
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Final Combinations (
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