From 7add3686fd593f27d29a3ced780177bd6fcd60c2 Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 10:44:08 +0100 Subject: [PATCH 1/7] Implement st suffix --- practice-tdd/get-ordinal-number.js | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js index 5c6291f5e..4022152ab 100644 --- a/practice-tdd/get-ordinal-number.js +++ b/practice-tdd/get-ordinal-number.js @@ -1,3 +1,3 @@ export function getOrdinalNumber(num) { - return "1st"; + return `${num}st`; } From e513388b69432199dab8f4394c4a705c7d4ceab7 Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 11:19:57 +0100 Subject: [PATCH 2/7] Implement nd suffix --- practice-tdd/get-ordinal-number.js | 15 ++++++++++++++- practice-tdd/get-ordinal-number.test.js | 6 ++++++ 2 files changed, 20 insertions(+), 1 deletion(-) diff --git a/practice-tdd/get-ordinal-number.js b/practice-tdd/get-ordinal-number.js index 4022152ab..fb702b33e 100644 --- a/practice-tdd/get-ordinal-number.js +++ b/practice-tdd/get-ordinal-number.js @@ -1,3 +1,16 @@ export function getOrdinalNumber(num) { - return `${num}st`; + const lastTwoDigits = num % 100; + const lastDigits = num % 10; + + if (lastTwoDigits >= 11 && lastTwoDigits <= 13) { + return `${num}th`; + } else if (lastDigits === 1) { + return `${num}st`; + } else if (lastDigits === 2) { + return `${num}nd`; + } else if (lastDigits === 3) { + return `${num}rd`; + } else { + return `${num}th`; + } } diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js index e23174a18..c85733d16 100644 --- a/practice-tdd/get-ordinal-number.test.js +++ b/practice-tdd/get-ordinal-number.test.js @@ -18,3 +18,9 @@ test("should append 'st' for numbers ending with 1, except those ending with 11" expect(getOrdinalNumber(21)).toEqual("21st"); expect(getOrdinalNumber(131)).toEqual("131st"); }); + +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(112)).toEqual("112th"); +}); From e0a7c74109a0e837e065b4aedfa5b5ea14bf803d Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 11:33:30 +0100 Subject: [PATCH 3/7] Implement rd suffix --- practice-tdd/get-ordinal-number.test.js | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js index c85733d16..269e77201 100644 --- a/practice-tdd/get-ordinal-number.test.js +++ b/practice-tdd/get-ordinal-number.test.js @@ -24,3 +24,9 @@ test("should append 'nd' for numbers ending with 2, except those ending with 12" expect(getOrdinalNumber(22)).toEqual("22nd"); expect(getOrdinalNumber(112)).toEqual("112th"); }); + +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(113)).toEqual("113th"); +}); From 87f874be0ea82cb6f8c0b7a06970bb6a36a71572 Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 11:45:38 +0100 Subject: [PATCH 4/7] Implement th suffix --- practice-tdd/get-ordinal-number.test.js | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js index 269e77201..8947ecefa 100644 --- a/practice-tdd/get-ordinal-number.test.js +++ b/practice-tdd/get-ordinal-number.test.js @@ -30,3 +30,9 @@ test("should append 'rd' for numbers ending with 3, except those ending with 13" expect(getOrdinalNumber(23)).toEqual("23rd"); expect(getOrdinalNumber(113)).toEqual("113th"); }); + +test("should append 'th' for other numbers", () => { + expect(getOrdinalNumber(4)).toEqual("4th"); + expect(getOrdinalNumber(24)).toEqual("24th"); + expect(getOrdinalNumber(114)).toEqual("114th"); +}); From c6c50009dbaa4fa965e25cec8f43b18368d1812b Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 11:54:06 +0100 Subject: [PATCH 5/7] Complete ordinal number tests --- practice-tdd/get-ordinal-number.test.js | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/practice-tdd/get-ordinal-number.test.js b/practice-tdd/get-ordinal-number.test.js index 8947ecefa..9a48f7921 100644 --- a/practice-tdd/get-ordinal-number.test.js +++ b/practice-tdd/get-ordinal-number.test.js @@ -36,3 +36,9 @@ test("should append 'th' for other numbers", () => { expect(getOrdinalNumber(24)).toEqual("24th"); expect(getOrdinalNumber(114)).toEqual("114th"); }); + +test("should append 'th' for numbers ending with 11, 12, 13", () => { + expect(getOrdinalNumber(11)).toEqual("11th"); + expect(getOrdinalNumber(12)).toEqual("12th"); + expect(getOrdinalNumber(13)).toEqual("13th"); +}); From 34c5ab9298e751a9aa85d48c154a7c8a923b2e65 Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 12:49:26 +0100 Subject: [PATCH 6/7] Implement countChar function --- practice-tdd/count.js | 9 ++++++++- practice-tdd/count.test.js | 5 +++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/practice-tdd/count.js b/practice-tdd/count.js index 5518c5712..0b461dfd4 100644 --- a/practice-tdd/count.js +++ b/practice-tdd/count.js @@ -1,3 +1,10 @@ export function countChar(stringOfCharacters, findCharacter) { - return 5 + let count = 0; + + for (const character of stringOfCharacters) { + if (character === findCharacter) { + count++; + } + } + return count; } diff --git a/practice-tdd/count.test.js b/practice-tdd/count.test.js index cb3aaae59..355944b99 100644 --- a/practice-tdd/count.test.js +++ b/practice-tdd/count.test.js @@ -22,3 +22,8 @@ test("should count multiple occurrences of a character", () => { // And a character `char` that does not exist within `str`. // When the function is called with these inputs, // Then it should return 0, indicating that no occurrences of `char` were found. + +test("should return 0 when character does not occur", () => { + const count = countChar("hello", "z"); + expect(count).toEqual(0); +}); From a074c862622e16e281c2fb8c734b73bad931bcdb Mon Sep 17 00:00:00 2001 From: Frumentius-Rev Date: Thu, 15 Oct 2026 13:20:14 +0100 Subject: [PATCH 7/7] Implement repeatStr function --- practice-tdd/repeat-str.js | 13 +++++++++---- practice-tdd/repeat-str.test.js | 14 ++++++++++++++ 2 files changed, 23 insertions(+), 4 deletions(-) diff --git a/practice-tdd/repeat-str.js b/practice-tdd/repeat-str.js index af273f3b0..771ec82fe 100644 --- a/practice-tdd/repeat-str.js +++ b/practice-tdd/repeat-str.js @@ -1,5 +1,10 @@ -export function repeatStr() { - // Your implementation of this function must *not* call String.prototype.repeat (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat). - // The goal is to re-implement that function, not to use it. - return "hellohellohello"; +export function repeatStr(str, count) { + if (count < 0) { + throw new Error("Count cannot be negative"); + } + let result = ""; + for (let i = 0; i < count; i++) { + result += str; + } + return result; } diff --git a/practice-tdd/repeat-str.test.js b/practice-tdd/repeat-str.test.js index 8a7036102..895133fb8 100644 --- a/practice-tdd/repeat-str.test.js +++ b/practice-tdd/repeat-str.test.js @@ -16,6 +16,20 @@ test("should repeat the string count times", () => { expect(repeatedStr).toEqual("hellohellohello"); }); +test("should return the original string when count is 1", () => { + const str = "hello"; + const count = 1; + const repeatedStr = repeatStr(str, count); + expect(repeatedStr).toEqual("hello"); +}); + +test("should return an empty string when count is 0", () => { + const str = "hello"; + const count = 0; + const repeatedStr = repeatStr(str, count); + expect(repeatedStr).toEqual(""); +}); + // Case: handle count of 1: // Given a target string `str` and a `count` equal to 1, // When the repeatStr function is called with these inputs,