[LeetCode] Duplicate Zeros (Python)

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Problem

Given a fixed-length integer array arr, duplicate each occurrence of zero, shifting the remaining elements to the right.

 

 

solution

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