清空筛选条件
清空筛选条件

multiplication of combinaton values?

2 次查看（过去 30 天）
metin yilmaz
metin yilmaz 2023-9-13
评论： Dyuman Joshi 2023-9-13
I would like to compute multiplcation of combination of numbers. For example if I have;
1, 2, 3, 4, 5 and want to find
Triple combinations of these numbers are
1,2, 3; 1,2,4; 1,2,5; 1,3,4; 1,3,5; ... etc How can find a=1*2*3; b=1*2*4; c=1*2*5; d=1*3*4; e=1*3*5 etc
a. How can I find all the multiplications of triple combinations, that is, a, b, c, d, etc
b. How can I easily and quickly find sum of a,b,c,d etc?

请先登录，再回答此问题。

采纳的回答

Dyuman Joshi
Dyuman Joshi 2023-9-13
编辑：Dyuman Joshi 2023-9-13
You are looking for
a - nchoosek
b1 - prod and b2 - sum
  2 个评论
metin yilmaz
metin yilmaz 2023-9-13
I can use easily nchoosek but I don't know how to assign each result to a variable
Dyuman Joshi
Dyuman Joshi 2023-9-13
Ran in:
@metin yilmaz
arr = nchoosek(1:5,3)
arr = 10×3
1 2 3 1 2 4 1 2 5 1 3 4 1 3 5 1 4 5 2 3 4 2 3 5 2 4 5 3 4 5
p = prod(arr,2)
p = 10×1
6 8 10 12 15 20 24 30 40 60
s = sum(p)
s = 225

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Digital Filter Analysis 的更多信息

标签

产品


版本

R2017a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by