Letter Combinations of Phone
Medium
Strings
Backtracking
Solve the Letter Combinations of Phone problem.
Input and output as shown in examples.
Constraints
See problem-specific constraints.
Examples
Example 1:
Input: 23
Output:
Example 2:
Input: 23
Output:
Hints
Think about the approach carefully.
Consider edge cases.
Tests:
Runtime:
Memory:
Test
Input:
Expected:
Got:
Click Run Code to test against sample cases, or Submit to test against all cases.
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