Move Zeroes

Desicription

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.

Example:

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Input: [0,1,0,3,12]
Output: [1,3,12,0,0]

Note:

  1. You must do this in-place without making a copy of the array.
  2. Minimize the total number of operations.

Solution

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class Solution {
public:
void moveZeroes(vector<int>& nums) {
int index = 0;
for(int i = 0; i < nums.size(); i++) {
if(nums[i] != 0) {
nums[index++] = nums[i];
}
}
while(index < nums.size()) {
nums[index++] = 0;
}
}
};