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.
class Solution {
public:
int removeElement(vector<int>& nums, int val) {
vector<int>::iterator iter;
int count = nums.size();
for(iter = nums.begin(); iter != nums.end(); )
{
if(*iter == val)
{
iter = nums.erase(iter); //返回被删除元素的下一个元素
count--;
continue;
}
iter++;
}
return count;
}
};