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

Published on 12 May 2024 09:40 PM
#Erre

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

Source code in the erre programming language

PROGRAM MISSING

CONST N=4

DIM PERMS$[23]

BEGIN
  PRINT(CHR$(12);) ! CLS
  DATA("ABCD","CABD","ACDB","DACB","BCDA","ACBD","ADCB")
  DATA("CDAB","DABC","BCAD","CADB","CDBA","CBAD","ABDC","ADBC")
  DATA("BDCA","DCBA","BACD","BADC","BDAC","CBDA","DBCA","DCAB")

  FOR I%=1 TO UBOUND(PERMS$,1) DO
    READ(PERMS$[I%])
  END FOR

  SOL$="...."

  FOR I%=1 TO N DO
    CH$=CHR$(I%+64)
    COUNT%=0
    FOR Z%=1 TO N DO
       COUNT%=0
       FOR J%=1 TO UBOUND(PERMS$,1) DO
          IF CH$=MID$(PERMS$[J%],Z%,1) THEN COUNT%=COUNT%+1 END IF
       END FOR
       IF COUNT%<>6 THEN
           !$RCODE="MID$(SOL$,Z%,1)=CH$"
       END IF
    END FOR
  END FOR
  PRINT("Solution is: ";SOL$)
END PROGRAM

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