Zeros to the Back
Move every 0 to the end of the list, keeping the relative order of the non-zero values.
Input: the first line has N; the second line has N integers.
Output: the rearranged list.
Constraints:
- 1 ≤ N ≤ 105
- −109 ≤ ai ≤ 109
Sample Tests
Input 1
5 0 1 0 3 12
Output 1
1 3 12 0 0
Input 2
2 0 0
Output 2
0 0
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