class Solution {
public:
void duplicateZeros(vector& arr) {
vector tem;
int size = 0;
int asize = arr.size();
for (auto it = arr.begin(); it != arr.end(); it++)
{
if (*it == 0)
{
tem.push_back(0);
tem.push_back(0);
}
else
{
tem.push_back(*it);
}
}
arr.clear();
for (int i = 0; i <asize; i++)
{
arr.push_back(tem[i]);
}
}
};
