Wrote program for Day 53

README.md

@@ -99,7 +99,7 @@ We encourage you to share your progress and ask questions in the Discussions sec
 | Day #50       | [Tic Tac Toe](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-50_Tic-Tac-Toe)                           | :white_check_mark:      |
 | Day #51       | [Asteroid Collision](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-51_Asteroid-Collision)                    | :white_check_mark:      |
 | Day #52       | [Switch On The Gravity](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-52_Switch-On-The-Gravity)                 | :white_check_mark:      |
-| Day #53       | [Javelin Parabolic Throw](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-53_Javelin-Parabolic-Throw)               | :white_large_square:      |
+| Day #53       | [Javelin Parabolic Throw](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-53_Javelin-Parabolic-Throw)               | :white_check_mark:      |
 | Day #54       | [RGB To Hex Color Convertor](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-54_RGB-To-Hex-Color-Converter)            | :white_large_square:      |
 | Day #55       | [Filter Repeating Character Strings](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-55_Filter_Repeating-Character-Strings)    | :white_large_square:      |
 | Day #56       | [Convert To Hex](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-56_Convert-To-Hex)                        | :white_large_square:      |

Week-08/Day-53_Javelin-Parabolic-Throw/day53/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "day53"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

Week-08/Day-53_Javelin-Parabolic-Throw/day53/src/lib.rs

@@ -0,0 +1,8 @@
+pub fn javelin_throw(initial_speed: f32, angle: u8) -> (u16, u16) {
+    const G: f32 = 9.81;
+    let angle = angle as f32;
+
+    let h_max = initial_speed * initial_speed * f32::sin(angle.to_radians()).powi(2) / (2f32 * G);
+    let d = initial_speed * initial_speed * f32::sin(2f32 * angle.to_radians()) / G;
+    (h_max.round() as u16, d.round() as u16)
+}

Week-08/Day-53_Javelin-Parabolic-Throw/day53/src/main.rs

@@ -0,0 +1,24 @@
+use std::io::{self, Write};
+
+use day53::javelin_throw;
+
+fn read_number<T>() -> T
+where
+    T: std::str::FromStr,
+    <T as std::str::FromStr>::Err: std::fmt::Debug,
+{
+    let mut input = String::new();
+    std::io::stdin().read_line(&mut input).unwrap();
+    input.trim().parse().unwrap()
+}
+
+fn main() {
+    print!("Enter the initial speed: ");
+    io::stdout().flush().unwrap();
+    let initial_speed: f32 = read_number();
+    print!("Enter the throw angle: ");
+    io::stdout().flush().unwrap();
+    let angle: u8 = read_number();
+    let (h_max, d) = javelin_throw(initial_speed, angle);
+    println!("Ymax={}, Xmax={}", h_max, d);
+}

Week-08/Day-53_Javelin-Parabolic-Throw/day53/tests/examples.rs

@@ -0,0 +1,19 @@
+#[cfg(test)]
+mod examples {
+    use day53::javelin_throw;
+
+    #[test]
+    fn example1() {
+        assert_eq!(javelin_throw(36.7, 45), (34, 137));
+    }
+
+    #[test]
+    fn example2() {
+        assert_eq!(javelin_throw(51.3, 20), (16, 172));
+    }
+
+    #[test]
+    fn example3() {
+        assert_eq!(javelin_throw(100.1, 89), (511, 36));
+    }
+}