例2.19 orted()使用示例

import numpy.random as nr
x1 = list(range(9,21))
nr.shuffle(x1)
x2 = sorted(x1)
x3 = sorted(x1,reverse = True)
x4 = sorted(x1,key = lambda item : len(str(item)))


print(x1);print(x2);print(x3);print(x4)

print("学号：3008")

结果如下图