Create 0012-integer-to-roman.js

javascript/0012-integer-to-roman.js

@@ -0,0 +1,84 @@
+/**
+ * https://leetcode.com/problems/integer-to-roman/
+ * @param {number} num
+ * @return {string}
+ */
+
+var intToRoman = function(num) {
+    let ans = "";
+
+    while(num !== 0){
+
+        //M == 1000
+        if(num >= 1000){
+            num -= 1000;
+            ans += "M";
+        }
+        //CM == 900
+        else if(num >= 900){
+            num -= 900;
+            ans += "CM";
+        }
+        //D == 500
+        else if(num >= 500){
+            num -= 500;
+            ans += "D";
+        }
+        //CD == 400
+        else if(num >= 400){
+            num -= 400;
+            ans += "CD"
+        }
+        //C == 100
+        else if(num >= 100){
+            num -= 100;
+            ans += "C";
+        }
+        //XC == 90
+        else if(num >= 90){
+            num -= 90;
+            ans += "XC";
+        }
+        //L == 50;
+        else if(num >= 50){
+            num -= 50;
+            ans += "L";
+        }
+        //XL == 40
+        else if(num >= 40){
+            num -= 40;
+            ans += "XL";
+        }
+        //X == 10
+        else if(num >= 10){
+            num -= 10;
+            ans += "X";
+        }
+        //IX == 9
+        else if(num >= 9){
+            num -= 9;
+            ans += "IX";
+        }
+        //V == 5
+        else if(num >= 5){
+            num -= 5;
+            ans += "V";
+        }
+        //IV == 4
+        else if(num >= 4){
+            num -= 4;
+            ans += "IV";
+        }
+        //II == 2
+        else if(num >= 2){
+            num -= 2;
+            ans += "II";
+        }
+        //I == 1
+        else{
+            num -= 1;
+            ans += "I";
+        }
+    }
+    return ans;
+};