Sierpinski carpet: Difference between revisions
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=={{header|Nascom BASIC}}== |
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{{trans|BBC BASIC}} |
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{{works with|Nascom ROM BASIC|4.7}} |
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<lang basic> |
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10 REM Sierpinski carpet |
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20 CLS |
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30 LET RDR=3 |
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40 LET S=3^RDR |
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50 FOR I=0 TO S-1 |
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60 FOR J=0 TO S-1 |
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70 LET X=J |
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80 LET Y=I |
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90 GOSUB 300 |
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100 IF C THEN SET(J,I) |
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110 NEXT J |
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120 NEXT I |
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130 REM ** Set up machine code INKEY$ command |
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140 IF PEEK(1)<>0 THEN RESTORE 410 |
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150 DOKE 4100,3328:FOR A=3328 TO 3342 STEP 2 |
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160 READ B:DOKE A,B:NEXT A |
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170 SCREEN 1,15 |
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180 PRINT "Hit any key to exit."; |
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190 A=USR(0):IF A<0 THEN 190 |
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200 CLS |
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210 END |
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290 REM ** Is (X,Y) in the carpet? |
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295 REM Returns C=0 (no) or C=1 (yes). |
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300 LET C=0 |
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310 XD3=INT(X/3):YD3=INT(Y/3) |
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320 IF X-XD3*3=1 AND Y-YD3*3=1 THEN RETURN |
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330 LET X=XD3 |
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340 LET Y=YD3 |
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350 IF X>0 OR Y>0 THEN GOTO 310 |
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360 LET C=1 |
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370 RETURN |
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395 REM ** Data for machine code INKEY$ |
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400 DATA 25055,1080,-53,536,-20665,3370,-5664,0 |
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410 DATA 27085,14336,-13564,6399,18178,10927 |
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420 DATA -8179,233 |
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</lang> |
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=={{header|NetRexx}}== |
=={{header|NetRexx}}== |
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