ƒ^ p S¨K¨R¨STACËÌRÔÎÍÉÊTESÔREÃÔ@@@ + ccQUICKSORT FROM DONALD KNUTH, ART OF COMPUTER PROGRAMMING, VOL 3,P 117. CODED BY E.P. McMAHON.›JJSORTS N RECORDS R(I) BY THEIR KEY K(I) BY A PARTITION-EXCHANGE SORT.›NNADDED VARIABLES K(0) AND K(N+1)ARE REQUIRED. K(0)ANYKEY.›MMYOU MAY WISH TO PLAY WITH M TO MINIMIZE RUNNING TIME FOR YOUR PROBLEMS.›eeTHIS SORT WORKS BY CORRECTLY PLACING THE FIRST ITEM SO ALL ABOVE ARE SMALLER, ALL BELOW LARGER.›ggTHE TWO SUBFILES THUS CREATED ARE SORTED IN TURN. THE STACK KEEPS TRACK OF SUBFILES TO BE SORTED.›IISUBFILES SIZE M OR SMALLER ARE SORTED BY A SRTAIGHT INSERTION SORT.›__LINES 810-830 IS THE INSERTION SORT WHICH IS ITSELF ABOUT TWICE AS FAST AS A BUBBLE SORT.›BB(THE ONLY THING GOOD ABOUT A BUBBLE SORT IS ITS NAME...OWCH)›66DROP ALL THESE REM'S WHEN USING THIS SUBROUTINE.›!&&€9@ ,9A,‚9A,( A --DEMO CASE›2!!-- DIM R(.) AND K(.) TO N+1›344-- SET N TO THE SIZE OF THE ARRAY TO BE SORTED›c-- SUBROUTINE STARTS HERE›d;6ƒ-6„-@!6…-†-6‡-@ ;‡!†AÈ7…&„ ‡A7- SORT SUBFILE FROM K(L) TO K(RT)›Ò! 6ˆ-„6‰-…6Š-8„,!6‹-‚8„,ÜUU- IF KEYS K(.) START OUT NEARLY IN ORDER, REPLACE LINE 210 WITH THE FOLLOWING--›æ<<210 I=L:J=RT:Q=INT(RND(0)*(L-RT))+L:TEST=K(Q):REC=R(Q)›,$ Š 8‰,6‰-‰&@$ A% ‰ˆ6‚8ˆ,-‹68ˆ,-Š% Aš)6‚8ˆ,-‚8‰,68ˆ,-8‰,)6ˆ-ˆ%@ô$ 8ˆ, Š6ˆ-ˆ%@$ AX9 ‰!ˆ6‚8‰,-‚8ˆ,!68‰,-8ˆ,/6‰-‰&@9 Ab 6‚8‰,-‹68‰,-Š6ˆ-‰¼U …&ˆˆ&„&6€8ƒ%@,-ˆ%@46ƒ-ƒ%@=6€8ƒ,-…K6…-ˆ&@U AÆK6€8ƒ%@,-„"6ƒ-ƒ%@36€8ƒ,-ˆ&@A6„-ˆ%@K A88STRAIGHT INSERTION SORT FOR SUBFILE SIZE M OR LESS› ;‰-„%@…%@$6Š-8‰,-6‹-‚8‰,;6ˆ-‰&@*L Š 8ˆ, 6‚8ˆ%@,-‚8ˆ,468ˆ%@,-8ˆ,B6ˆ-ˆ&@L A4)6‚8ˆ%@,-‹%68ˆ%@,-Š) ‰„Hƒ"AHIF ALL SUBFILES ARE DONE, WE ARE FINISHED SORT›ˆCLICK TO SHOW OPERATIONAL›‰G%2@ @@G2Ž5 6…-€8ƒ,6„-€8ƒ&@,+6ƒ-ƒ&@5 AèSORT IS FINISHED›é$ÐK AND R DIM'ED EARLIER›Õ##( ÓÁÍÐÌÅ ÃÁÓÅ ÚZˆ-@A468ˆ,-P:H:,$A,H6‚8ˆ,-8ˆ,$@V(ˆ8ˆ,‚8ˆ,Z ˆßV,($ÄÍÁ ×ÉÌÌ ÂÅ ÄÉÓÁÂÌÅÄ ÁÓ ÓÏÒÔ ÂÅÇÉÎÓ¡@ˆ-@AD ˆVAYä9@'@9@ îD68,-6@.68A,-A:6†-AD AóAY@4øDD6Œ-++F:@,$AV%F:@,,$AV%F:@ ,,'@`ˆ-@† ˆ8ˆ,‚8ˆ, ˆ ((Œ SECONDS*P(M(BLIST LINES 12 TO 99 (L.12,99) FOR A BRIEF TUTORIAL ON THIS SORT.P€ D:QUIKSORT