Farey sequence: Difference between revisions
Added QBasic
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Line 375:
if n < 12 then print else print rjust(cont,7)
end subroutine</syntaxhighlight>
{{out}}
<pre>Same as FreeBASIC entry.</pre>
==={{header|QBasic}}===
{{works with|QBasic|1.1}}
{{works with|QuickBasic|4.5}}
<syntaxhighlight lang="qbasic">FUNCTION farey (n, dsc)
b = 1: c = 1: d = n
IF dsc = TRUE THEN a = 1: c = n - 1
cnt = cnt + 1
IF n < 12 THEN PRINT a; "/"; b;
WHILE ((c <= n) AND NOT dsc) OR ((a > 0) AND dsc)
aa = a: bb = b: cc = c: dd = d
k = (n + b) \ d
a = cc: b = dd: c = k * cc - aa: d = k * dd - bb
cnt = cnt + 1
IF n < 12 THEN PRINT a; "/"; b;
WEND
IF n < 12 THEN PRINT
farey = cnt
END FUNCTION
CLS
CONST TRUE = -1: FALSE = NOT TRUE
FOR i = 1 TO 9
PRINT USING "F# ="; i;
t = farey(i, FALSE)
NEXT i
FOR i = 10 TO 11
PRINT USING "F## ="; i;
t = farey(i, FALSE)
NEXT i
PRINT
FOR i = 100 TO 900 STEP 100
PRINT USING "F#### = ######"; i; farey(i, FALSE)
NEXT i
PRINT USING "F1000 = ######"; farey(1000, FALSE)</syntaxhighlight>
{{out}}
<pre>Same as FreeBASIC entry.</pre>
Line 2,158 ⟶ 2,201:
=={{header|langur}}==
<syntaxhighlight lang="langur">val .farey =
var .a, .b, .c, .d = 0, 1, 1, .n
while[=[[0, 1]]] .c <= .n {
val .k = (.n + .b) // .d
.a, .b, .c, .d = .c, .d, .k
_while ~= [[.a, .b]]
}
}
val .testFarey = impure
writeln "Farey sequence for orders 1 through 11"
for .i of 11 {
writeln $"\.i:2;: ", join " ", map(fn(.f) $"\.f[1];/\.f[2];", .farey(.i))
}
}
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