Python相关，有关Python的运算

Question

求解问题

Answer 1

def sqr(x):
    x = abs(x)
    res = 0
    for i in range(x):
        res += x
    return res

def cube(x):
    t = sqr(x)
    res = 0
    for i in range(abs(x)):
        res += t
    if x > 0:
        return res
    else:
        return -res

def quad(x):
    if x == 0:
        return 0
    else:
        return int(sqr(x)/(1/sqr(x)))
print(sqr(5))
print(cube(5))
print(quad(5))