Wrote program for Day 48

README.md

@@ -94,7 +94,7 @@ We encourage you to share your progress and ask questions in the Discussions sec
 | Day #45       | [Subtract The Swapped Bits...](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-07/Day-45_Subtract-The-Swapped-Bits-Without-Temp-Storage)          | :white_check_mark:      |
 | Day #46       | [Hot Pics Of Danny Devito](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-07/Day-46_Hot-Pics-Of-Danny-Devito)              | :white_check_mark:      |
 | Day #47       | [Zip It](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-07/Day-47_Zip-It)                                | :white_check_mark:      |
-| Day #48       | [Christmas Tree](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-07/Day-48_Christmas-Tree)                        | :white_large_square:      |
+| Day #48       | [Christmas Tree](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-07/Day-48_Christmas-Tree)                        | :white_check_mark:      |
 | Day #49       | [Swimming Pool](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-07/Day-49_Swimming-Pool)                         | :white_large_square:      |
 | Day #50       | [Tic Tac Toe](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-50_Tic-Tac-Toe)                           | :white_large_square:      |
 | Day #51       | [Asteroid Collision](https://github.com/LiveGray/100-Days-Of-Rust/tree/main/Week-08/Day-51_Asteroid-Collision)                    | :white_large_square:      |

Week-07/Day-48_Christmas-Tree/day48/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "day48"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

Week-07/Day-48_Christmas-Tree/day48/src/lib.rs

@@ -0,0 +1,12 @@
+pub fn tree(height: usize) -> Vec<String> {
+    let mut tree = Vec::new();
+    for i in 0..height {
+        tree.push(format!(
+            "{}{}{}",
+            " ".repeat(height - i - 1),
+            "#".repeat(i * 2 + 1),
+            " ".repeat(height - i - 1)
+        ));
+    }
+    tree
+}

Week-07/Day-48_Christmas-Tree/day48/src/main.rs

@@ -0,0 +1,16 @@
+use std::io::{self, Write};
+
+use day48::tree;
+
+fn main() {
+    print!("Insert the height of the tree: ");
+    io::stdout().flush().unwrap();
+
+    let mut buffer = String::new();
+    io::stdin().read_line(&mut buffer).unwrap();
+
+    let height: usize = buffer.trim().parse().unwrap();
+    let tree = tree(height);
+
+    println!("{:#?}", tree);
+}

Week-07/Day-48_Christmas-Tree/day48/tests/examples.rs

@@ -0,0 +1,33 @@
+#[cfg(test)]
+mod examples {
+    use day48::tree;
+
+    #[test]
+    fn test1() {
+        assert_eq!(tree(1), vec!["#"]);
+    }
+
+    #[test]
+    fn test2() {
+        assert_eq!(tree(2), vec![" # ", "###"]);
+    }
+
+    #[test]
+    fn test3() {
+        assert_eq!(
+            tree(5),
+            vec![
+                "    #    ",
+                "   ###   ",
+                "  #####  ",
+                " ####### ",
+                "#########"
+            ]
+        );
+    }
+
+    #[test]
+    fn test4() {
+        assert_eq!(tree(0), Vec::<String>::new());
+    }
+}