“切片"一个数变成三个随机数

本文介绍了“切片"一个数变成三个随机数的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我需要生成一个每行(10 行)填充三个随机"值的文件，但这些值的总和必须等于 15.

I need to generate a file filled with three "random" values per line (10 lines), but those values sum must equal 15.

结构为:INDEX A B C".

The structure is: "INDEX A B C".

示例:

1 15 0 0 2 0 15 0 3 0 0 15 4 1 14 0 5 2 13 0 6 3 12 0 7 4 11 0 8 5 10 0 9 6 9 0 10 7 8 0

推荐答案

如果数字可以任意组合使用:

If the numbers can by any just use combinations:

from itertools import combinations with open("rand.txt","w") as f: combs = [x for x in combinations(range(16),3) if sum(x ) == 15 ][:10] for a,b,c in combs: f.write("{} {} {}\n".format(a,b,c))