Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.
For example, given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [1, 3, 12, 0, 0].
class Solution {
public: void moveZeroes(vector<int>& nums )
{
int length = nums.size();
int pos = 0;
for (int i= 0;i<length;i++)
{
if(nums[i]!= 0)
{
nums[pos] = nums[i];
pos++;
}
}
for(;pos<length;pos++)
nums[pos] = 0;
}
};