feat(solutions): add acronyms/rust/function

challenges/acronyms/README.md

@@ -10,7 +10,7 @@ Convert a given sentence to its acronym.
 
 ### Example 1
 
-#### Input
+### Input
 
 ```txt
 Programming Challenges is really cool

challenges/acronyms/solutions/rust/function/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "rust_application"
+version = "1.0.0"

challenges/acronyms/solutions/rust/function/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "rust_application"
+version = "1.0.0"
+edition = "2021"
+
+[dependencies]

challenges/acronyms/solutions/rust/function/README.md

@@ -0,0 +1,3 @@
+# acronyms/rust/function
+
+Created by [@Divlo](https://github.com/Divlo) on 4 January 2023.

challenges/acronyms/solutions/rust/function/src/main.rs

@@ -0,0 +1,21 @@
+use std::io;
+
+pub fn get_acronym(sentence: &str) -> String {
+    let words = sentence.replace("\"", "");
+    let words = words.split_whitespace();
+    let mut acronym = String::new();
+    for word in words {
+        if let Some(character) = word.to_uppercase().chars().next() {
+            acronym.push(character);
+        }
+    }
+    acronym
+}
+
+fn main() {
+    let mut input = String::new();
+    io::stdin()
+        .read_line(&mut input)
+        .expect("Failed to read `stdin` line.");
+    println!("{}", get_acronym(&input));
+}