feat: add initial implementation of score_of_a_string with main function

3110_score_of_a_string/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "score_of_a_string"
+version = "0.1.0"

3110_score_of_a_string/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "score_of_a_string"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

3110_score_of_a_string/src/main.rs

@@ -0,0 +1,14 @@
+fn main() {
+    println!("{}", Solution::score_of_string("hello".to_string()));
+}
+
+struct Solution;
+
+impl Solution {
+    pub fn score_of_string(s: String) -> i32 {
+        s.chars()
+            .zip(s.chars().skip(1))
+            .map(|(a, b)| (a as i32 - b as i32).abs())
+            .sum()
+    }
+}