class Solution { public: int removeElement(vector<int>& nums, int val) { int start = 0, end = nums.size(),ans=0; while(start < end) { if(nums[start] == val) { swap(nums[start],nums[end-1]); end--; } else start++; } return end; } };
class Solution { public: int removeElement(vector<int>& nums, int val) { int start = 0, end = nums.size(),ans=0; while(start < end) { if(nums[start] == val) { swap(nums[start],nums[end-1]); end--; } else start++; } return end; } };