车牌号统计,冒泡排序,彩票

1.车牌区域划分, 现给出以下车牌. 根据车牌的信息, 分析出各省的车牌持有量.

cars =["鲁A32444","鲁B12333","京B8989M","黑C49678","黑C46555","沪B25041"]
locals={'沪':"上海","黑":"黑龙江","鲁":"山东","鄂":"湖北","湘":"湖南","京":"北京"}
li=[]
cars_locals={}
for el in cars:
    li.append(locals[el[0]])###li:山东,北京....
    cars_locals[locals[el[0]]]=cars_locals.get(locals[el[0]],0)+1 ##get换成setdefault也可以
print(cars_locals)

2.冒泡排序

li=[77,2,965,112,56,97,87,256]
j=0
while j < len(li)-1:
    for i in range(len(li)-1-j):
        if li[i] > li[i+1]:
            li[i], li[i+1] = li[i+1], li[i]
    j +=1
print(li)

 3.完成彩票36选7的功能. 从36个数中随机的产生7个数. 最终获取到7个不重复的数据作为最终的开奖结果.

from random import randint
s=set()
while len(s)<7 :
    i=randint(1, 36)
    s.add(i)
print(s)