function returnFloat_thousand(value){ var value=Math.ceil(Math.round(parseFloat(value)*100)/100)/10000; var xsd=value.toString().split("."); console.log(xsd); if(xsd.length==1){ value=value.toString(); value=value.toString()+".00"; ret…
题目1:有四个数字:1.2.3.4,能组成多少个互不相同且无重复数字的三位数?各是多少? 程序分析:可填在百位.十位.个位的数字都是1.2.3.4.组成所有的排列后再去 掉不满足条件的排列. #程序源代码 #!/usr/bin/python # -*- coding: UTF-8 -*- for i in range(1,5): for j in range(1,5): for k in range(1,5): if( i != k ) and (i != j) and (j != k): pr…
# from random import randrange # num = int(input('摇几次骰子: ')) # sides=int(input('筛子有几个面: ')) # sum=0 # for i in range(num): # sum+= randrange(sides)+1 # print('最终的点数和是 ',sum,'平均点数是:',sum/num) # from random import shuffle # from pprint import pprint #…