Added 5-th case and solution for them to get-ordinal-number

Author: Konvaly

Sprint-3/2-practice-tdd/get-ordinal-number.js

@@ -1,13 +1,15 @@
 function getOrdinalNumber(num) {
-  if (num === 1) {
-    return "1st";
-  }
-  if (num === 2) {
-    return "2nd";
-  }
-  if (num === 3) {
-    return "3rd";
+  const lastDigit = num % 10;
+  const lastTwoDigits = num % 100;
+
+  if (lastTwoDigits >= 11 && lastTwoDigits <= 13) {
+    return num + "th";
   }
+
+  if (lastDigit === 1) return num + "st";
+  if (lastDigit === 2) return num + "nd";
+  if (lastDigit === 3) return num + "rd";
+
   return num + "th";
 }
 

Sprint-3/2-practice-tdd/get-ordinal-number.test.js

@@ -29,9 +29,20 @@ test("should return '3rd' for 3", () => {
 });
 
 // Case 4: Identify the ordinal number for other numbers
-// When the number is 11,
-// Then the function should return "11th"
-
-test("should return '11th' for 11", () => {
-  expect(getOrdinalNumber(11)).toEqual("11th");
+// If the last digit of number is not 1, 2, 3
+// and the last two digits are not between 11 and 13
+// Then the function should return the number with "th" suffix
+
+test("should return '44th' for 44", () => {
+  expect(getOrdinalNumber(44)).toEqual("44th");
+  expect(getOrdinalNumber(9)).toEqual("9th");
+  expect(getOrdinalNumber(20)).toEqual("20th");
+  expect(getOrdinalNumber(100)).toEqual("100th");
+  expect(getOrdinalNumber(111)).toEqual("111th");
+  expect(getOrdinalNumber(112)).toEqual("112th");
+  expect(getOrdinalNumber(113)).toEqual("113th");
+  expect(getOrdinalNumber(131)).toEqual("131st");
+  expect(getOrdinalNumber(222)).toEqual("222nd");
+  expect(getOrdinalNumber(323)).toEqual("323rd");
+  expect(getOrdinalNumber(4046486655)).toEqual("4046486655th");
 });