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Combinations - Leetcode Solution
LeetCode: Combinations Leetcode Solution
Difficulty: Medium
Topics: backtracking
Given two integers n and k, return all possible combinations of k numbers out of 1…n.
Example:
Input: n = 4, k = 2.
Output: [
[1,2,3],
[1,2,4],
[1,3,4],
[2,3,4]
]
Combinations Solution Code
1