python 集合题

from random import randint

a_Set = set()

b_Set = {randint(1, 10000) 

         for i in range(1000)}

c_Set = {randint(8000, 20000)

         for i in range(1000)}

# python中生成随机数的方式相比c，c++方便很多

a_Set = b_Set | c_Set

d_Set = b_Set & c_Set

e_Set = b_Set-c_Set

f_Set = b_Set ^ c_Set

# c++中求集合的并集，交集等需要手搓集合或使用迭代器+set_union/intersection/…等等完成

# python直接用简单的符号完成了工作（只学过数学的也能看懂

print(a_Set)

print(d_Set)

print(e_Set)

print(f_Set)