Search⌘ K
AI Features

Solution: Combinations

Explore the backtracking approach to solve combinatorial problems by generating all unique combinations of k numbers from a range of 1 to n. Learn the recursive method that builds combinations step-by-step, uses pruning to optimize, and manages time and space complexity effectively.

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:

  • 11 \leq n 20\leq 20 ...