From a4095d77d237902ee46f90bf517ea47f9f3f8ad5 Mon Sep 17 00:00:00 2001
From: Jesper Handskemager <jesper@handskemager.xyz>
Date: Thu, 23 Feb 2023 12:58:32 +0100
Subject: [PATCH] Initial commit

---
 go.mod  |  3 +++
 main.go | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)
 create mode 100644 go.mod
 create mode 100644 main.go

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..a67db7e
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module MontyHallStats
+
+go 1.20
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..b173ab1
--- /dev/null
+++ b/main.go
@@ -0,0 +1,80 @@
+package main
+
+import (
+	"fmt"
+	"math/rand"
+	"time"
+)
+
+func play_game(switchDoor bool) bool {
+	// Initialize the random number generator with the current time
+	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
+
+	doors := []int{1, 2, 3}
+	prize := doors[rng.Intn(3)]
+	chosen := 0
+
+	// Create a new source of random
+	rng = rand.New(rand.NewSource(time.Now().UnixNano()))
+
+	// Select a random door
+	input := rng.Intn(3)
+	chosen = input
+
+	// Open one of the other two doors to reveal a goat
+	var opened int
+	for _, door := range doors {
+		if door != chosen && door != prize {
+			opened = door
+			break
+		}
+	}
+
+	// Switch the door if switchDoor equals true
+	if switchDoor {
+		for _, door := range doors {
+			if door != chosen && door != opened {
+				chosen = door
+				break
+			}
+		}
+	}
+
+	// Return if the prize is won
+	return chosen == prize
+}
+
+func main() {
+	// How many games to play
+	gamesToPlay := 10000
+	games := make([]int, gamesToPlay)
+
+	// Should the door be switched?
+	switchDoor := true
+
+	for i := 0; i < gamesToPlay; i++ {
+		won := play_game(switchDoor)
+		if won {
+			games[i] = 1
+		} else {
+			games[i] = 0
+		}
+	}
+
+	totalWon := 0
+	totalLost := 0
+
+	// Count the number of won and lost games
+	for _, num := range games {
+		if num == 0 {
+			totalLost++
+		} else {
+			totalWon++
+		}
+	}
+
+	// Calculate the winning chance
+	winningChance := float64(totalWon) / float64(gamesToPlay) * 100.0
+	fmt.Printf("In %d games\nGames won: %d\nGames Lost: %d\n", gamesToPlay, totalWon, totalLost)
+	fmt.Printf("This gives you a winning chance of %.2f%% percent\n", winningChance)
+}