RosettaCodeData/Task/100-prisoners/Transd/100-prisoners.transd
2023-07-01 13:44:08 -04:00

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Text

#lang transd
MainModule: {
simRandom: (λ numPris Int() nRuns Int()
locals: nSucc 0.0
(for n in Range(nRuns) do
(with draws (for i in Range(numPris) project i) succ 1
(for prisN in Range(numPris) do
(shuffle draws)
(if (not (is-el Range(in: draws 0 (/ numPris 2)) prisN))
(= succ 0) break))
(+= nSucc succ)
) )
(ret (* (/ nSucc nRuns) 100))
),
simOptimal: (λ numPris Int() nRuns Int()
locals: nSucc 0.0
(for n in Range(nRuns) do
(with draws (for i in Range(numPris) project i) succ 0 nextDraw 0
(shuffle draws)
(for prisN in Range(numPris) do (= nextDraw prisN) (= succ 0)
(for i in Range( (/ numPris 2)) do
(= nextDraw (get draws nextDraw))
(if (== nextDraw prisN) (= succ 1) break))
(if (not succ) break))
(+= nSucc succ)
) )
(ret (* (/ nSucc nRuns) 100))
),
_start: (λ
(lout prec: 4 :fixed "Random play: " (simRandom 100 10000) "% of wins")
(lout "Strategic play: " (simOptimal 100 10000) "% of wins")
(lout "Check random play: " (simRandom 10 100000) "% of wins")
)
}