将数组中的连续相等数字设置为零

def set_consecutive_zeros(arr):
    if not arr:
        return []

    result = [arr[0]]
    for i in range(1, len(arr)):
        if arr[i] != arr[i - 1]:
            result.append(arr[i])
        else:
            result.append(0)
    return result

# 示例
arr = [1, 1, 2, 2, 2, 3, 4, 4, 5]
print(set_consecutive_zeros(arr))  # 输出: [1, 0, 2, 0, 0, 3, 4, 0, 5]

for i in range(len(arr)):
    if arr[i] == arr[i + 1]:  # 当i为最后一个元素时，arr[i + 1]会越界
        arr[i] = 0

for i in range(len(arr) - 1):  # 确保i + 1不会越界
    if arr[i] == arr[i + 1]:
        arr[i] = 0