1089. Duplicate Zeros

1089. Duplicate Zeros

class Solution {
	public void duplicateZeros(int[] arr) {
		ArrayList rem = new ArrayList();
		for (int i = 0; i < arr.length; i++) {
			
				if (arr[i] == 0) {
					rem.add(0);
					rem.add(0);
					arr[i] = rem.get(0);
					rem.remove(0);
				
			}else {
				rem.add(arr[i]);
				arr[i] = rem.get(0);
				rem.remove(0);
			}
		}

	}

	
}

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