Intersecting number wheels: Difference between revisions
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(→Python: Simplified proceedural: replace fields with name, *values) |
(Added Algol 68) |
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=={{header|ALGOL 68}}== |
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<lang algol68>BEGIN |
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# a number wheel element # |
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MODE NWELEMENT = UNION( CHAR # wheel name #, INT # wheel value # ); |
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# a number wheel # |
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MODE NW = STRUCT( CHAR name, REF INT position, FLEX[ 1 : 0 ]NWELEMENT values ); |
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# get the next value from a number wheel in an array of number wheels # |
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# note: invalid wheel names will cause subscript range errors # |
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OP NEXT = ( []NW wheels )INT: |
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BEGIN |
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INT result; |
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BOOL found := FALSE; |
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INT w := LWB wheels; # start with the first wheel # |
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WHILE NOT found DO |
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IF position OF wheels[ w ] > UPB values OF wheels[ w ] THEN |
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# passed the end of the wheel, go back to the start # |
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position OF wheels[ w ] := LWB values OF wheels[ w ] |
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FI; |
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NWELEMENT e = ( values OF wheels[ w ] )[ position OF wheels[ w ] ]; |
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position OF wheels[ w ] +:= 1; |
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CASE e |
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IN ( INT n ): BEGIN result := n; found := TRUE END |
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, ( CHAR c ): BEGIN |
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w := LWB wheels; |
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WHILE name OF wheels[ w ] /= c DO w +:= 1 OD |
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END |
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ESAC |
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OD; |
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result |
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END # NEXT # ; |
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# prints the first n values from an array of wheels # |
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PROC show = ( INT n, []NW wheels )VOID: |
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BEGIN |
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print( ( "First ", whole( n, 0 ), " values from the Intersecting Number Wheels:" ) ); |
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FOR i FROM LWB wheels TO UPB wheels DO |
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print( ( newline, " ", name OF wheels[ i ], ":" ) ); |
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FOR v FROM LWB values OF wheels[ i ] TO UPB values OF wheels[ i ] DO |
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CASE ( values OF wheels[ i ] )[ v ] |
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IN ( INT n ): print( ( " ", whole( n, 0 ) ) ) |
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, ( CHAR c ): print( ( " ", c ) ) |
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ESAC |
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OD |
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OD; |
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print( ( newline, " " ) ); |
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FOR i TO n DO print( ( " ", whole( NEXT wheels, 0 ) ) ) OD; |
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print( ( newline, newline ) ) |
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END # show # ; |
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# show some wheels in action # |
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show( 20, ( NW( "A", LOC INT := 1, ( 1, 2, 3 ) ) ) ); |
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show( 20, ( NW( "A", LOC INT := 1, ( 1, "B", 2 ) ) |
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, NW( "B", LOC INT := 1, ( 3, 4 ) ) ) ); |
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show( 20, ( NW( "A", LOC INT := 1, ( 1, "D", "D" ) ) |
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, NW( "D", LOC INT := 1, ( 6, 7, 8 ) ) ) ); |
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show( 20, ( NW( "A", LOC INT := 1, ( 1, "B", "C" ) ) |
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, NW( "B", LOC INT := 1, ( 3, 4 ) ) |
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, NW( "C", LOC INT := 1, ( 5, "B" ) ) ) ) |
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END</lang> |
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{{out}} |
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<pre> |
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First 20 values from the Intersecting Number Wheels: |
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A: 1 2 3 |
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1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 |
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First 20 values from the Intersecting Number Wheels: |
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A: 1 B 2 |
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B: 3 4 |
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1 3 2 1 4 2 1 3 2 1 4 2 1 3 2 1 4 2 1 3 |
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First 20 values from the Intersecting Number Wheels: |
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A: 1 D D |
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D: 6 7 8 |
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1 6 7 1 8 6 1 7 8 1 6 7 1 8 6 1 7 8 1 6 |
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First 20 values from the Intersecting Number Wheels: |
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A: 1 B C |
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B: 3 4 |
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C: 5 B |
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1 3 5 1 4 3 1 4 5 1 3 4 1 3 5 1 4 3 1 4 |
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</pre> |
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=={{header|Factor}}== |
=={{header|Factor}}== |
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An attempt has been made to simplify the interface as much as possible by creating a natural literal syntax for number wheel groups. This should be useful for exploring these types of sequences in the future. |
An attempt has been made to simplify the interface as much as possible by creating a natural literal syntax for number wheel groups. This should be useful for exploring these types of sequences in the future. |
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