Find Chess960 starting position identifier: Difference between revisions

Find Chess960 starting position identifier (view source)

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→‎{{header|Ruby}}: Fix algorithm, add Unicode piece output and troublesome examples.

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Revision as of 20:53, 23 July 2022 (view source) Markjreed (talk \| contribs) (→‎{{header\|Raku}}: Add troublesome examples.) ← Older edit		Revision as of 21:03, 23 July 2022 (view source) Markjreed (talk \| contribs) (→‎{{header\|Ruby}}: Fix algorithm, add Unicode piece output and troublesome examples.) Newer edit →
Line 806: =={{header\|Ruby}}== <lang ruby>CHESS_PIECES = %w<♖♘♗♕♔ ♜♞♝♛♚> ~~<lang ruby>~~def chess960_to_spid(pos) start_str = pos.tr(~~"♖♘♗♕♔"~~CHESS_PIECES.join, "~~RNBQK~~RNBQKRNBQK") #1 knights score s = start_str.delete("QB") n = [0,1,2,3,4].combination(2).to_a.index( [s.index("N"), s.rindex("N")] ) #2 queen score q = start_str.delete("NB").index("Q") #3 bishops bs = start_str.index("B"), start_str.rindex("B") Line 821 ⟶ 822: end %w<QNRBBNKR RNBQKBNR RQNBBKRN RNQBBKRN>.each_with_index do \|array, i\| ~~positions = ["QNRBBNKR", "♖♘♗♕♔♗♘♖"]~~ pieces = array.tr("RNBQK", CHESS_PIECES[i%2]) ~~positions.each{\|pos\| puts "#{pos}: #{chess960_to_spid(pos)}" }~~ puts "#{pieces} (#{array}): #{chess960_to_spid array}" end </lang> {{out}} <pre>♕♘♖♗♗♘♔♖ (QNRBBNKR): 105 ♜♞♝♛♚♝♞♜ (RNBQKBNR): 518 ~~♖♘♗♕♔♗♘♖: 518~~ ♖♕♘♗♗♔♖♘ (RQNBBKRN): 601 ♜♞♛♝♝♚♜♞ (RNQBBKRN): 617 </pre> =={{header\|Wren}}== {{libheader\|Wren-trait}}