LeetCode:98.颜色分类

目录

1.颜色分类

---

1.颜色分类

class Solution {
public:
    void sortColors(vector<int>& nums) {
        int n = nums.size();
        int left = -1, right = n, i = 0;
        while(i < right)
        {
            if(nums[i] == 2)
            {
                --right;
                swap(nums[i], nums[right]);
            }
            else if(nums[i] == 0)
            {
                ++left;
                swap(nums[i], nums[left]);
                ++i;
            }
            else ++i;
        }
    }
};