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

Published on 12 May 2024 09:40 PM
#Clojure

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

Source code in the clojure programming language

(use 'clojure.math.combinatorics)
(use 'clojure.set)

(def given (apply hash-set (partition 4 5 "ABCD CABD ACDB DACB BCDA ACBD ADCB CDAB DABC BCAD CADB CDBA CBAD ABDC ADBC BDCA DCBA BACD BADC BDAC CBDA DBCA DCAB" )))
(def s1 (apply hash-set (permutations "ABCD")))  	   
(def missing (difference s1 given))


(def abcds ["ABCD" "CABD" "ACDB" "DACB" "BCDA" "ACBD" "ADCB" "CDAB" 
            "DABC" "BCAD" "CADB" "CDBA" "CBAD" "ABDC" "ADBC" "BDCA" 
            "DCBA" "BACD" "BADC" "BDAC" "CBDA" "DBCA" "DCAB"])
             
(def freqs (->> abcds (apply map vector) (map frequencies)))

(defn v->k [fqmap v] (->> fqmap (filter #(-> % second (= v))) ffirst))

(->> freqs (map #(v->k % 5)) (apply str) println)

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