LeetCode27:Remove Element

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

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

需要注意的是当删除一个元素后，迭代器是不需要增加的，这时已经是指向下一个元素了。运行代码：

class Solution {
public:
    int removeElement(vector<int>& nums, int val) {
        vector<int>::iterator iter;
        for(iter=nums.begin();iter!=nums.end();)
        {
            if(*iter==val)
            {
                nums.erase(iter);
            }else
            {
                iter++;
            }
        }
        return nums.size();
    }
};