LeetCode 27. Remove Element

Remove Element

---

题目描述：

Given an array and a value, remove all instances of that value in place and return the new length.

Do not allocate extra space for another array, you must do this in place with constant memory.

The order of elements can be changed. It doesn't matter what you leave beyond the new length.

Example:
Given input array nums = [3,2,2,3], val = 3

Your function should return length = 2, with the first two elements of nums being 2.

---

题目大意:
给定一个数组nums和一个数val，返回数组nums去除和val相同的元素后的数组长度len，并且将前数组中非val的元素都移动到前len位。

---

题目代码:

class Solution {public:    int removeElement(vector<int>& nums, int val) {        int j = 0;        for(int i = 0; i < nums.size(); i++){            if(nums[i] != val){                nums[j++] = nums[i];            }        }        return j;    }};