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

Question

Given a fixed-length integer array arr, duplicate each occurrence of zero, shifting the remaining elements to the right.
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Solution 1

Sure, here is a Python solution for the problem:

def duplicateZeros(arr):
    i = 0
    while i < len(arr):
        if arr[i] == 0:
            arr.insert(i, 0)
            arr.pop()
            i += 1
        i += 1
    return arr

Here is a step-by-step explanation of the code:

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