algorithm/average_score.py at master · shell-develop/algorithm · GitHub

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#! /usr/bin python

#coding:utf-8

"""

问题：

定义一个int型的一维数组，包含40个元素，用来存储每个学员的成绩，循环产生40个0~100之间的随机整数，

(1)将它们存储到一维数组中，然后统计成绩低于平均分的学员的人数，并输出出来。

(2)将这40个成绩按照从高到低的顺序输出出来。

"""

#no need to import division from future just change num to float(num)

import random

def make_score(num):

score = [random.randint(0,100) for i in range(num)]

return score

def less_average(score):

num = len(score)

sum_score = sum(score)

ave_num = sum_score/float(num)

less_ave = [i for i in score if i<ave_num]

return (ave_num,len(less_ave))

if __name__=="__main__":

score = make_score(40)

average_num,less_num = less_average(score)

print 'the score of average is:',average_num

print "the number of less average is:",less_num

print "the every score is[from big to small]:",sorted(score,reverse=True)