class Solution {
public void moveZeroes(int[] nums) {
int slow = 0, fast = 0;
while (fast < nums.length) {
if (nums[fast] != 0) {
nums[slow++] = nums[fast];
}
fast++;
}
for (int i = slow; i < nums.length; i++) {
nums[i] = 0;
}
}
}