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Knapsack problem/Unbounded: Difference between revisions
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→displays all solutions: added whitespace, used a template for the output section.
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<lang rexx>/*REXX program solves the knapsack/unbounded problem: highest value, weight, and volume.*/
maxPanacea= 0
maxPanacea=0 /* value weight volume */▼
maxIchor = 0; /*
maxGold = 0; /* ═══════ ══════ ══════ */
max$ = 0;
now. = 0;
# = 0;
maxPanacea= min(sack.w / panacea.w, sack.v / panacea.v)
maxIchor = min(sack.w / ichor.w, sack.v / ichor.v)
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now.w = g * gold.w + i * ichor.w + p * panacea.w
now.v = g * gold.v + i * ichor.v + p * panacea.v
if now.w > sack.w | now.v > sack.v then iterate i
if now.$ > max$ then do; #= 0; max$= now.$; end
if now.$ = max$ then do; #= # + 1;
max$.#= now.$; maxW.#= now.w; maxV.#= now.v
L= max(L, length(p + i + g) )
end
end /*g (gold) */
end /*i (ichor) */
end /*p (panacea)*/
L= L + 1
do j=1 for #; say; say copies('▒', 70) "solution" j
say ' panacea in sack:' right(maxP.j, L)
say ' ichors in sack:' right(maxI.j, L)
say ' gold items in sack:' right(maxG.j, L)
say '════════════════════' copies("═", L)
say 'carrying a total of:' right(maxP.j + maxI.j + maxG.j, L)
say left('', 40) "total value: " max$.j / 1
say left('', 40) "total weight: " maxW.j / 1
say left('', 40) "total volume: " maxV.j / 1
end /*j*/
/*stick a fork in it, we're all done. */</lang>
{{out|output|text= when using the internal default input:}}
<pre>
▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ solution 1
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