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Ingy döt Net 2026-02-01 16:33:20 -08:00
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Task/Sorting-algorithms-Bead-sort/COBOL/sorting-algorithms-bead-sort.cobol
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>>SOURCE FORMAT FREE
*> This code is dedicated to the public domain
*> This is GNUCOBOL 2.0
identification division.
program-id. beadsort.
environment division.
configuration section.
repository. function all intrinsic.
data division.
working-storage section.
01 filler.
03 row occurs 9 pic x(9).
03 r pic 99.
03 r1 pic 99.
03 r2 pic 99.
03 pole pic 99.
03 a-lim pic 99 value 9.
03 a pic 99.
03 array occurs 9 pic 9.
01 NL pic x value x'0A'.
procedure division.
start-beadsort.
*> fill the array
compute a = random(seconds-past-midnight)
perform varying a from 1 by 1 until a > a-lim
compute array(a) = random() * 10
end-perform
perform display-array
display space 'initial array'
*> distribute the beads
perform varying r from 1 by 1 until r > a-lim
move all '.' to row(r)
perform varying pole from 1 by 1 until pole > array(r)
move 'o' to row(r)(pole:1)
end-perform
end-perform
display NL 'initial beads'
perform display-beads
*> drop the beads
perform varying pole from 1 by 1 until pole > a-lim
move a-lim to r2
perform find-opening
compute r1 = r2 - 1
perform find-bead
perform until r1 = 0 *> no bead or no opening
*> drop the bead
move '.' to row(r1)(pole:1)
move 'o' to row(r2)(pole:1)
*> continue up the pole
compute r2 = r2 - 1
perform find-opening
compute r1 = r2 - 1
perform find-bead
end-perform
end-perform
display NL 'dropped beads'
perform display-beads
*> count the beads in each row
perform varying r from 1 by 1 until r > a-lim
move 0 to array(r)
inspect row(r) tallying array(r)
for all 'o' before initial '.'
end-perform
perform display-array
display space 'sorted array'
stop run
.
find-opening.
perform varying r2 from r2 by -1
until r2 = 1 or row(r2)(pole:1) = '.'
continue
end-perform
.
find-bead.
perform varying r1 from r1 by -1
until r1 = 0 or row(r1)(pole:1) = 'o'
continue
end-perform
.
display-array.
display space
perform varying a from 1 by 1 until a > a-lim
display space array(a) with no advancing
end-perform
.
display-beads.
perform varying r from 1 by 1 until r > a-lim
display row(r)
end-perform
.
end program beadsort.