Binary search: Difference between revisions
Content added Content deleted
Thundergnat (talk | contribs) m (Automated syntax highlighting fixup (second round - minor fixes)) |
(→{{header|Minimal BASIC}}: Corrected. Minimal BASIC does not have the operators OR, AND, NOT.) |
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{{works with|Commodore BASIC|3.5}} |
{{works with|Commodore BASIC|3.5}} |
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{{works with|Nascom ROM BASIC|4.7}} |
{{works with|Nascom ROM BASIC|4.7}} |
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<syntaxhighlight lang=" |
<syntaxhighlight lang="basic"> |
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10 REM Binary search |
10 REM Binary search |
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20 LET N = 10 |
20 LET N = 10 |
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520 LET F = 0 |
520 LET F = 0 |
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530 LET M = L |
530 LET M = L |
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540 IF L > H |
540 IF L > H THEN 650 |
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550 |
550 IF F <> 0 THEN 650 |
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560 |
560 LET M = L+INT((H-L)/2) |
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570 |
570 IF A(M) >= X THEN 600 |
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580 |
580 LET L = M+1 |
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590 GOTO 540 |
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590 IF A(M) <= X THEN 620 |
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600 |
600 IF A(M) <= X THEN 630 |
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610 |
610 LET H = M-1 |
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620 |
620 GOTO 540 |
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630 |
630 LET F = 1 |
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640 |
640 GOTO 540 |
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650 |
650 IF F = 0 THEN 680 |
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660 |
660 LET I1 = M |
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670 |
670 RETURN |
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680 |
680 LET I1 = -1 |
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690 RETURN |
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</syntaxhighlight> |
</syntaxhighlight> |
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=={{header|BASIC256}}== |
=={{header|BASIC256}}== |
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====Recursive Solution==== |
====Recursive Solution==== |
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