LeetCode 0031  Next Permutation
Contents
Next Permutation
Desicription
Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.
If such arrangement is not possible, it must rearrange it as the lowest possible order (ie, sorted in ascending order).
The replacement must be inplace, do not allocate extra memory.
Here are some examples. Inputs are in the lefthand column and its corresponding outputs are in the righthand column.
1,2,3
→ 1,3,2
3,2,1
→ 1,2,3
1,1,5
→ 1,5,1
Solution

