Time: 5 ms (53.29%), Space: 61.4 MB (34.33%) - LeetHub

Author: areumH

0013-roman-to-integer/0013-roman-to-integer.js

@@ -0,0 +1,30 @@
+/**
+ * @param {string} s
+ * @return {number}
+ */
+var romanToInt = function(s) {
+    const value = {
+        I: 1,
+        V: 5,
+        X: 10,
+        L: 50,
+        C: 100,
+        D: 500,
+        M: 1000,
+    };
+
+    const arr = s.split('');
+    let answer = 0;
+
+    for (let i=0; i<arr.length-1; i++) {
+        if (value[arr[i]] < value[arr[i+1]]) {
+            answer -= value[arr[i]];
+        } else {
+            answer += value[arr[i]]
+        }
+    }
+
+    answer += value[arr[arr.length-1]];
+
+    return answer;
+};