Wrote program for Day 17

README.md

@@ -63,7 +63,7 @@ We encourage you to share your progress and ask questions in the Discussions sec
 | Day #14       | [The Karacas Encryption Algorithm](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-02/Day-14_Karacas-Encryption-Algorithm)      | :white_check_mark:      |
 | Day #15       | [Valid Anagram](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-15_Valid-Anagram)                         | :white_check_mark:      |
 | Day #16       | [Nim Game](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-16_Nim-Game)                              | :white_check_mark:      |
-| Day #17       | [Prison Break](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-17_Prison-Break)                          | :white_large_square:      |
+| Day #17       | [Prison Break](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-17_Prison-Break)                          | :white_check_mark:      |
 | Day #18       | [Unique Paths](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-18_Unique-Paths)                          | :white_large_square:      |
 | Day #19       | [URL Shortener](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-19_URL-Shortener)                         | :white_large_square:      |
 | Day #20       | [API Challenge](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-03/Day-20_API-Challenge)                         | :white_large_square:      |

Week-03/Day-17_Prison-Break/day17/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "day17"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

Week-03/Day-17_Prison-Break/day17/src/lib.rs

@@ -0,0 +1,17 @@
+pub fn freed_prisoners(cells: &[bool]) -> usize {
+    if !cells[0] {
+        return 0;
+    }
+
+    let mut count = 0;
+    let mut required = true;
+
+    for c in cells {
+        if c == &required {
+            count += 1;
+            required = !required;
+        }
+    }
+
+    count
+}

Week-03/Day-17_Prison-Break/day17/src/main.rs

@@ -0,0 +1,27 @@
+use day17::freed_prisoners;
+use std::io::{self, Write};
+
+fn main() {
+    let mut buffer = String::new();
+
+    print!("Enter the cells (0s and 1s space separated): ");
+    io::stdout().flush().expect("Failed to flush stdout");
+
+    std::io::stdin()
+        .read_line(&mut buffer)
+        .expect("Failed to read from stdin");
+
+    let cells: Vec<bool> = buffer
+        .split_whitespace()
+        .map(
+            |x| match x.parse::<u8>().expect("Only numbers are expected") {
+                0 => false,
+                1 => true,
+                _ => panic!("Only 0s and 1s are allowed"),
+            },
+        )
+        .collect();
+    let result = freed_prisoners(&cells);
+
+    println!("You can free {} prisoners", result);
+}

Week-03/Day-17_Prison-Break/day17/tests/examples.rs

@@ -0,0 +1,24 @@
+use day17::freed_prisoners;
+
+#[test]
+fn example1() {
+    assert_eq!(
+        freed_prisoners(&[true, true, false, false, false, true, false]),
+        4
+    );
+}
+
+#[test]
+fn example2() {
+    assert_eq!(freed_prisoners(&[true, true, true]), 1);
+}
+
+#[test]
+fn example3() {
+    assert_eq!(freed_prisoners(&[false, false, false]), 0);
+}
+
+#[test]
+fn example4() {
+    assert_eq!(freed_prisoners(&[false, true, true, true]), 0);
+}