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杨辉三角

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icm162

#1 Created at ... [Delete] [Delete and Lock User]
def triangles():  
    ret = [0, 1, 0]
    while True:
        yield ret[1:-1]
        ret = [ret[i - 1] + ret[i - ret.__len__()] for i in range(0, ret.__len__() + 1)]

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