initial commitHEADmain

4 files changed, 160 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
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index 0000000..2387701
--- /dev/null
+++ b/Cargo.lock
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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "getrandom"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.155"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c"
+
+[[package]]
+name = "monty-hall-problem"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "wasi"
+version = "0.11.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..1887ff6
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "monty-hall-problem"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rand = "0.8.5"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..dc0d873
--- /dev/null
+++ b/src/main.rs
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+// Monty Hall Problem
+// https://en.wikipedia.org/wiki/Monty_Hall_problem
+
+// Step 1: Choose a winning door
+// Step 2: User chooses a door
+// Step 3: Open an incorrect door
+// Step 4: Ask for a switch
+// Step 5: Reveal the result
+
+// Step 6: Record the result (win or loss)
+// Step 7: Calculate the win rate (win / total * 100)
+// Step 8: Loop
+
+use rand::Rng; 
+
+fn main() {
+    println!("Monty Hall Problem");
+    println!("by Kaorai\n");
+
+    let mut total_plays: i32 = 0;
+    let mut wins: i32 = 0;
+
+    loop {
+        let winning_door: i8 = rand::thread_rng().gen_range(1..4);
+
+        let mut user_choice: i8 = 0;
+
+        while user_choice > 3 || user_choice < 1 {
+            println!("Choose a door (1, 2, 3) or type 'exit' to quit: ");
+
+            let mut user_input: String = String::new();
+            std::io::stdin().read_line(&mut user_input).expect("Failed to read line");
+            user_input = user_input.trim().to_string();
+
+            if user_input == "exit" {
+                return;
+            }
+
+            user_choice = user_input.parse().expect("Please enter a number");
+        }
+
+        let mut incorrect_door: i8 = user_choice;
+        if user_choice == winning_door {
+            while incorrect_door == winning_door || incorrect_door == user_choice {
+                incorrect_door = rand::thread_rng().gen_range(1..4);
+            }
+        } else {
+            incorrect_door = 6 - user_choice - winning_door;
+        }
+        
+        println!("\nDoor {} is incorrect", incorrect_door);
+        println!("Would you like to switch doors? (y or n)");
+
+        let mut user_input: String = String::new();
+        std::io::stdin().read_line(&mut user_input).expect("Failed to read line");
+        user_input = user_input.trim().to_string();
+
+        if user_input == "y" {
+            user_choice = 6 - user_choice - incorrect_door;
+        }
+
+        println!("\nUser choice: {}", user_choice);
+        println!("Winning door: {}", winning_door);
+        if user_choice == winning_door {
+            println!("You win!");
+            wins += 1;
+        } else {
+            println!("You lose!");
+        }
+
+        total_plays += 1;
+
+        println!("Win rate: {:.2}%\n", (wins as f32 / total_plays as f32) * 100.0);
+    }
+}