- Ali hard

PG-Momik · Aug 11, 2024 · 3bdad29 · 3bdad29
1 parent 20ce396
commit 3bdad29
Showing 1 changed file with 33 additions and 0 deletions.
diff --git a/_003_romanToInteger.js b/_003_romanToInteger.js
@@ -0,0 +1,33 @@
+/**
+ * @param {string} s
+ * @return {number}
+ */
+var romanToInt = function (s) {
+    const convertMap = {
+        'I': 1,
+        'V': 5,
+        'X': 10,
+        'L': 50,
+        'C': 100,
+        'D': 500,
+        'M': 1000
+    }
+
+    let sum  = 0;
+    let prev = undefined;
+
+    for(let iterations = s.length -1; iterations >=0; iterations --){
+        let num = convertMap[s[iterations]];
+
+        if(iterations === s.length -1){
+            prev = num;
+            sum  = sum+num;
+            continue;
+        }
+
+        sum =  num < prev ? sum-num: sum+num;
+        prev = num;
+    }
+
+    return sum
+};