feat: Menambahkan Algoritma Konversi (Roman to Integer) (#179)

* feat: Menambahkan Algoritma Konversi (Roman to Integer)

* fix: return Value + example

* fix: Indentasi

algorithm/conversion/RomanToInteger.js

@@ -0,0 +1,40 @@
+const romanNum = {
+  I: 1,
+  V: 5,
+  X: 10,
+  L: 50,
+  C: 100,
+  D: 500,
+  M: 1000,
+};
+
+function romanToInt(num) {
+  let accumulator = 0;
+  for (let i = 0; i < num.length; i++) {
+    if (num[i] === "I" && num[i + 1] === "V") {
+      accumulator += 4;
+      i++;
+    } else if (num[i] === "I" && num[i + 1] === "X") {
+      accumulator += 9;
+      i++;
+    } else if (num[i] === "X" && num[i + 1] === "L") {
+      accumulator += 40;
+      i++;
+    } else if (num[i] === "X" && num[i + 1] === "C") {
+      accumulator += 90;
+      i++;
+    } else if (num[i] === "C" && num[i + 1] === "D") {
+      accumulator += 400;
+      i++;
+    } else if (num[i] === "C" && num[i + 1] === "M") {
+      accumulator += 900;
+      i++;
+    } else {
+      accumulator += romanNum[num[i]];
+    }
+  }
+  return console.log(accumulator);
+}
+
+// Masukan Angka Romawi Disini.
+romanToInt("MCMLXXXIX"); // 1989