#!perl ## HiLowDeal use strict; ## This program has a "dealer" and a "player" ## The dealer generates two random numbers and sticks them ## into two envelopes. One of these is handed to the player. ## The player looks at her number, then picks another ## number at random and assumes that she has picked the ## dealer's number. She then either states that she has ## the high or the low envelope. 50/50? Perhaps not... ## Usage: HiLowDeal 10 10000 50 ## The above example plays ten thousand games, ## uses the numbers 1 through 10 to draw the random numbers from, ## and outputs a running total about 50 times my \$games = shift || 10000; ## How many games shall we play? my \$limit = shift || 10; ## What range of numbers? my \$checkpoint = shift || 3; ## Approximate # of checkpoint displays \$checkpoint = int \$games/\$checkpoint; ## The total set is really an infinite set, but we ## will restrain our players to this without letting ## them "know" the range, making it effectively infinite. ## In other words, if a "10" is received, they do not know ## that there is no "11", "12", etc... and cannot automatically ## deduce that they have the higher card. my @money=(1..\$limit); print "Games=\$games, from 1 to \$limit, checkpoint is \$checkpoint.\n"; my (\$letter1, \$letter2); my (\$guess, \$result, \$actual); my \$total=0; my \$counter=0; for (1..\$games) { ## Select two random cards, must be different \$letter1 = \$money[rand @money]; { \$letter2 = \$money[rand @money]; redo if \$letter1 == \$letter2; } ## Player one has both, letters, then one to player #2. ## Player two looks at his, then makes a guess as to the other one. ## Cannot guess their own number { \$guess = \$money[rand @money]; redo if \$guess == \$letter2; } ## The player's best guess: (1 means they have the higher card) \$result = \$letter2 > \$guess ? 1 : 0; ## The actual value: \$actual = \$letter2 > \$letter1 ? 1 : 0; ## Are they correct? If so, give them a point. If not, take one away: \$total += (\$result==\$actual) ? +1 : -1; if (++\$counter == \$checkpoint) { \$counter=0; print "TOTAL: \$total\n"; } } print "Grand total: \$total\n";