created tests and function for get-ordinal-number even in large numbers

Author: TzeMingHo

Sprint-3/2-practice-tdd/count.js

@@ -6,8 +6,8 @@ function countChar(stringOfCharacters, findCharacter) {
       count += 1;
     }
   }
-  console.log(arrayOfCharacters);
-  console.log(count);
+  //console.log(arrayOfCharacters);
+  //console.log(count);
   return count;
 }
 

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

@@ -1,5 +1,21 @@
 function getOrdinalNumber(num) {
-  return "1st";
+  const stringNum = String(num);
+  const paddedLast2Digit = stringNum.padStart(2, "0").slice(-2);
+  const numberValue = Number(paddedLast2Digit);
+
+  if (numberValue >= 11 && numberValue <= 13) {
+    return `${stringNum}th`;
+  }
+  if (stringNum.endsWith("1")) {
+    return `${stringNum}st`;
+  }
+  if (stringNum.endsWith("2")) {
+    return `${stringNum}nd`;
+  }
+  if (stringNum.endsWith("3")) {
+    return `${stringNum}rd`;
+  }
+  return `${stringNum}th`;
 }
 
 module.exports = getOrdinalNumber;

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

@@ -11,3 +11,51 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
   expect(getOrdinalNumber(1)).toEqual("1st");
 });
+test("should return '2nd' for 2", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+});
+test("should return '3rd' for 3", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+});
+test("should return '4th' for 4", () => {
+  expect(getOrdinalNumber(4)).toEqual("4th");
+});
+test("should return '11th' for 11", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+});
+test("should return '12th' for 12", () => {
+  expect(getOrdinalNumber(12)).toEqual("12th");
+});
+test("should return '13th' for 13", () => {
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});
+test("should return '21st' for 21", () => {
+  expect(getOrdinalNumber(21)).toEqual("21st");
+});
+test("should return '22nd' for 22", () => {
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+});
+test("should return '23rd' for 23", () => {
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+});
+test("should return '24th' for 24", () => {
+  expect(getOrdinalNumber(24)).toEqual("24th");
+});
+test("should return '111th' for 111", () => {
+  expect(getOrdinalNumber(111)).toEqual("111th");
+});
+test("should return '112th' for 112", () => {
+  expect(getOrdinalNumber(112)).toEqual("112th");
+});
+test("should return '113th' for 113", () => {
+  expect(getOrdinalNumber(113)).toEqual("113th");
+});
+test("should return '121st' for 121", () => {
+  expect(getOrdinalNumber(121)).toEqual("121st");
+});
+test("should return '1000011th' for 1000011", () => {
+  expect(getOrdinalNumber(1000011)).toEqual("1000011th");
+});
+test("should return '1000002nd' for 1000002", () => {
+  expect(getOrdinalNumber(1000002)).toEqual("1000002nd");
+});