Combinations
Explore how to solve combination problems using backtracking algorithms. Learn to return all possible selections of k numbers from the range 1 to n, mastering unordered combinations that are crucial in coding interviews.
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Statement
You are given two integers, n and k. Your task is to return all possible combinations of k numbers chosen from the range [1, n].
The result can be returned in any order.
Note: Combinations are unordered, i.e., [1, 2] and [2, 1] are considered the same combination.
Constraints:
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