class Solution: def duplicateZeros(self, arr: List[int]) -> None: """ Do not return anything, modify arr in-place instead. """ result_list = [] for i in range(len(arr)): print(arr[i]) if arr[i] == 0: result_list.append(arr[i]) result_list.append(arr[i]) result = result_list[:len(arr)] for x in range(len(result)): arr[x] = result[x]