Finished get ordinal numberFinished get-ordinal number and the test

Author: divinmank

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

@@ -1,5 +1,22 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const str = num.toString();
+  const lastTwo = str.slice(-2);
+  const lastDigit = str.slice(-1);
+
+  let suffix;
+  if (lastTwo === '11' || lastTwo === '12' || lastTwo === '13') {
+    suffix = 'th';
+  } else if (lastDigit === '1') {
+    suffix = 'st';
+  } else if (lastDigit === '2') {
+    suffix = 'nd';
+  } else if (lastDigit === '3') {
+    suffix = 'rd';
+  } else {
+    suffix = 'th';
+  }
+
+  return str + suffix;
 }
 
 module.exports = getOrdinalNumber;

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

@@ -18,3 +18,34 @@ test("should append 'st' for numbers ending with 1, except those ending with 11"
   expect(getOrdinalNumber(21)).toEqual("21st");
   expect(getOrdinalNumber(131)).toEqual("131st");
 });
+
+// Case 2: Numbers ending with 2 (but not 12)
+// When the number ends with 2, except those ending with 12,
+// Then the function should return a string by appending "nd" to the number.
+test("should append 'nd' for numbers ending with 2, except those ending with 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(132)).toEqual("132nd");
+});
+
+// Case 3: Numbers ending with 3 (but not 13)
+// When the number ends with 3, except those ending with 13,
+// Then the function should return a string by appending "rd" to the number.
+test("should append 'rd' for numbers ending with 3, except those ending with 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(133)).toEqual("133rd");
+});
+
+// Case 4: Numbers ending with 11, 12, 13, or any other digit
+// When the number ends with 11, 12, 13, or any digit not 1, 2, or 3,
+// Then the function should return a string by appending "th" to the number.
+test("should append 'th' for numbers ending with 11, 12, 13, or other digits", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+  expect(getOrdinalNumber(4)).toEqual("4th");
+  expect(getOrdinalNumber(5)).toEqual("5th");
+  expect(getOrdinalNumber(10)).toEqual("10th");
+  expect(getOrdinalNumber(111)).toEqual("111th");
+});