How to resolve the algorithm Find the missing permutation step by step in the R programming language

Published on 12 May 2024 09:40 PM
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How to resolve the algorithm Find the missing permutation step by step in the R programming language

Table of Contents

Problem Statement

Listed above are   all-but-one   of the permutations of the symbols   A,   B,   C,   and   D,   except   for one permutation that's   not   listed.

Find that missing permutation.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Find the missing permutation step by step in the R programming language

Source code in the r programming language

library(combinat)

permute.me <- c("A", "B", "C", "D")
perms  <- permn(permute.me)  # list of all permutations
perms2 <- matrix(unlist(perms), ncol=length(permute.me), byrow=T)  # matrix of all permutations
perms3 <- apply(perms2, 1, paste, collapse="")  # vector of all permutations

incomplete <- c("ABCD", "CABD", "ACDB", "DACB", "BCDA", "ACBD", "ADCB", "CDAB", 
                "DABC", "BCAD", "CADB", "CDBA", "CBAD", "ABDC", "ADBC", "BDCA", 
                "DCBA", "BACD", "BADC", "BDAC", "CBDA", "DBCA", "DCAB")

setdiff(perms3, incomplete)

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