Balanced brackets: Difference between revisions
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Not a robot (talk | contribs) (add SETL) |
(Added various BASIC dialects (Applesoft BASIC, Chipmunk Basic, GW-BASIC, MSX Basic, and True BASIC)) |
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=={{header|BASIC}}== |
=={{header|BASIC}}== |
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{{works with|QBasic}} |
{{works with|QBasic}} |
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<syntaxhighlight lang="qbasic">DECLARE FUNCTION checkBrackets% (brackets AS STRING) |
<syntaxhighlight lang="qbasic">DECLARE FUNCTION checkBrackets% (brackets AS STRING) |
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DECLARE FUNCTION generator$ (length AS INTEGER) |
DECLARE FUNCTION generator$ (length AS INTEGER) |
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generator$ = xx$ |
generator$ = xx$ |
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END FUNCTION</syntaxhighlight> |
END FUNCTION</syntaxhighlight> |
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{{out}} |
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<pre> [][[][][]] OK |
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Sample output: |
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[][[][][]] OK |
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][[[]] NOT OK |
][[[]] NOT OK |
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[][] OK |
[][] OK |
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][][[[]] NOT OK |
][][[[]] NOT OK |
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][[]][ NOT OK |
][[]][ NOT OK |
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OK |
OK</pre> |
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==={{header|Applesoft BASIC}}=== |
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The [[#MSX_BASIC|MSX BASIC]] solution works without any changes. |
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==={{header|BASIC256}}=== |
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{{trans|Yabasic}} |
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<syntaxhighlight lang="basic256">s$ = "[[]][]" |
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print s$; " = "; |
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if not check_brackets(s$) then print "not "; |
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print "ok" |
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end |
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function check_brackets(s$) |
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level = 0 |
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for i = 1 to length(s$) |
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c$ = mid(s$, i, 1) |
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begin case |
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case c$ = "[" |
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level = level + 1 |
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case c$ = "]" |
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level = level - 1 |
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if level < 0 then exit for |
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end case |
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next i |
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return level = 0 |
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end function</syntaxhighlight> |
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==={{header|Chipmunk Basic}}=== |
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The [[#MSX_BASIC|MSX BASIC]] solution works without any changes. |
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==={{header|Commodore BASIC}}=== |
==={{header|Commodore BASIC}}=== |
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2000 DATA , [], ][, [][], ][][, [[][]], []][[]</syntaxhighlight> |
2000 DATA , [], ][, [][], ][][, [[][]], []][[]</syntaxhighlight> |
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==={{header|GW-BASIC}}=== |
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{{works with|PC-BASIC|any}} |
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{{works with|BASICA}} |
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The [[#MSX_BASIC|MSX BASIC]] solution works without any changes. |
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=={{header| |
==={{header|MSX Basic}}=== |
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Based on Commodore BASIC implementation |
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{{trans|Yabasic}} |
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{{works with|MSX BASIC|any}} |
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<syntaxhighlight lang="basic256">s$ = "[[]][]" |
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{{works with|Applesoft BASIC}} |
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print s$; " = "; |
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{{works with|BASICA}} |
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{{works with|Chipmunk Basic}} |
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{{works with|GW-BASIC}} |
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{{works with|PC-BASIC|any}} |
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{{works with|QBasic}} |
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<syntaxhighlight lang="qbasic">100 CLS : rem 10 HOME for Applesoft BASIC |
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110 FOR N = 1 TO 7 |
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120 READ S$ |
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130 IF S$ = "" THEN PRINT"(EMPTY)";: GOTO 150 |
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140 PRINT S$; |
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150 PRINT TAB(9); |
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160 GOSUB 190 |
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170 NEXT N |
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180 END |
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190 S = 0 |
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200 FOR K = 1 TO LEN(S$) |
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210 C$ = MID$(S$,K,1) |
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220 IF C$ = "[" THEN S = S+1 |
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230 IF C$ = "]" THEN S = S-1 |
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240 IF S < 0 THEN PRINT "NOT OK": RETURN |
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250 NEXT K |
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260 IF S = 0 THEN PRINT " OK": RETURN |
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270 PRINT "NOT OK" |
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280 RETURN |
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290 DATA "", "[]", "][", "[][]", "][][", "[[][]]", "[]][[]"</syntaxhighlight> |
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{{out}} |
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<pre>(EMPTY) OK |
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[] OK |
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][ NOT OK |
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[][] OK |
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][][ NOT OK |
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[[][]] OK |
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[]][[] NOT OK</pre> |
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==={{header|True BASIC}}=== |
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if not check_brackets(s$) then print "not "; |
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{{trans|Run BASIC}} |
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print "ok" |
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<syntaxhighlight lang="qbasic">DIM brk$(10) |
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end |
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LET brk$(1) = "[[[][]]]" |
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LET brk$(2) = "[[[]][[[][[][]]]]]" |
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function check_brackets(s$) |
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LET brk$(3) = "][][]][[" |
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level = 0 |
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LET brk$(4) = "[][][]" |
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for i = 1 to length(s$) |
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LET brk$(5) = "[][]][]][[]]][[[" |
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c$ = mid(s$, i, 1) |
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LET brk$(6) = "]][[[[]]]][]]][[[[" |
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begin case |
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LET brk$(7) = "[[][[[]]][]]" |
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LET brk$(8) = "[]][][][[[]]" |
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level = level + 1 |
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LET brk$(9) = "][]][[" |
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LET brk$(10) = "[]][][][[]" |
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level = level - 1 |
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if level < 0 then exit for |
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end case |
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next i |
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return level = 0 |
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end function</syntaxhighlight> |
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FOR i = 1 TO 7 |
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LET b$ = brk$(i) |
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DO WHILE POS(b$,"[]") <> 0 |
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LET x = POS(b$,"[]") |
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IF x > 0 THEN LET b$ = (b$)[1:x-1] & (b$)[x+2:maxnum] |
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LOOP |
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IF TRIM$(b$) = "" THEN |
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PRINT " OK "; |
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ELSE |
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PRINT "Not OK "; |
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END IF |
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PRINT brk$(i) |
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NEXT i |
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END</syntaxhighlight> |
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=={{header|Batch File}}== |
=={{header|Batch File}}== |
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