# multComb: Combinations of the first n integers in k groups In NSM3: Functions and Datasets to Accompany Hollander, Wolfe, and Chicken - Nonparametric Statistical Methods, Third Edition

## Description

This is a function, used for generating the permutations used for the Exact distribution of many of the statistical procedures in Hollander, Wolfe, Chicken - Nonparametric Statistical Methods Third Edition, to generate possible combinations of the first n=n1+n2+...+nk integers within k groups.

## Usage

 `1` ```multComb(n.vec) ```

## Arguments

 `n.vec` Contains the group sizes n1,n2,...,nk

## Details

The computations involved get very time consuming very quickly, so be careful not to use it for too many large groups.

## Value

Returns a matrix of n!/(n1!*n2!*...*nk!) rows, where each row represents one possible combination.

Grant Schneider

## Examples

 ```1 2 3 4 5``` ```##What are the ways that we can group 1,2,3,4,5 into groups of 2, 2, and 1? multComb(c(2,2,1)) ##Another example, with four groups multComb(c(2,2,3,2)) ```

NSM3 documentation built on April 6, 2021, 5:05 p.m.