Permutations
Detailed guide and Python implementation for the 'Permutations' problem.
Problem Statement
Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.
Implement a function permute(nums: list) -> list.
- •1 <= nums.length <= 6
- •-10 <= nums[i] <= 10
- •All the integers of nums are unique
Examples
[1,2,3]
[[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]
All 3! = 6 permutations of [1,2,3] are generated.
[0,1]
[[0,1],[1,0]]
All 2! = 2 permutations of [0,1] are generated.
[1]
[[1]]
Only one permutation exists for a single element.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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