From ec598dfada63c60c06139dcb818ebff7bf00dfb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?H=C3=A5kon=20St=C3=B8rdal?=
 <30749741+hakon55@users.noreply.github.com>
Date: Wed, 23 Oct 2024 22:46:34 +0200
Subject: [PATCH] First commit, roman-to-integer

---
 roman-to-integer/Cargo.toml  |  6 ++++++
 roman-to-integer/src/main.rs | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 roman-to-integer/Cargo.toml
 create mode 100644 roman-to-integer/src/main.rs

diff --git a/roman-to-integer/Cargo.toml b/roman-to-integer/Cargo.toml
new file mode 100644
index 0000000..c8704be
--- /dev/null
+++ b/roman-to-integer/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "roman-to-integer"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/roman-to-integer/src/main.rs b/roman-to-integer/src/main.rs
new file mode 100644
index 0000000..50f7869
--- /dev/null
+++ b/roman-to-integer/src/main.rs
@@ -0,0 +1,32 @@
+use std::collections::HashMap;
+
+fn roman_to_int(s: String) -> i32 {
+    let mut map = HashMap::new();
+    map.insert('I', 1);
+    map.insert('V', 5);
+    map.insert('X', 10);
+    map.insert('L', 50);
+    map.insert('C', 100);
+    map.insert('D', 500);
+    map.insert('M', 1000);
+
+    let mut result = 0;
+    let chars: Vec<char> = s.chars().collect();
+
+    for i in 0..chars.len() {
+        let current_value = map[&chars[i]];
+        if i < chars.len() - 1 && current_value < map[&chars[i + 1]] {
+            result -= current_value;
+        } else {
+            result += current_value;
+        }
+    }
+
+    result
+}
+
+fn main() {
+    let roman = String::from("XXVII");
+    let integer = roman_to_int(roman);
+    println!("The integer value is: {}", integer);
+}