From 861486503fdfabbd92112dae5ae651ae8b6c2266 Mon Sep 17 00:00:00 2001
From: mirabellemorah <myrakuti@gmail.com>
Date: Mon, 30 Jun 2025 18:30:45 +0100
Subject: [PATCH 1/3] Provided answers to 1-key-implement

---
 Sprint-3/1-key-implement/1-get-angle-type.js  | 17 ++++++---
 .../1-key-implement/2-is-proper-fraction.js   | 13 +++++--
 Sprint-3/1-key-implement/3-get-card-value.js  | 36 +++++++++++++++++--
 3 files changed, 57 insertions(+), 9 deletions(-)

diff --git a/Sprint-3/1-key-implement/1-get-angle-type.js b/Sprint-3/1-key-implement/1-get-angle-type.js
index 08d1f0cba..8ede6fd7e 100644
--- a/Sprint-3/1-key-implement/1-get-angle-type.js
+++ b/Sprint-3/1-key-implement/1-get-angle-type.js
@@ -8,8 +8,13 @@
 // Then, write the next test! :) Go through this process until all the cases are implemented
 
 function getAngleType(angle) {
-   if (angle === 90) return "Right angle";
-   // read to the end, complete line 36, then pass your test here
+  if (angle === 90) return "Right angle";
+  // read to the end, complete line 36, then pass your test here
+  else if (angle < 90) return "Acute angle";
+  else if (angle > 90 && angle < 180) return "Obtuse angle";
+  else if (angle === 180) return "Straight angle";
+  else if (angle > 180 && angle < 360) return "Reflex angle";
+  else return "Invalid angle";
 }
 
 // we're going to use this helper function to make our assertions easier to read
@@ -43,14 +48,18 @@ assertEquals(acute, "Acute angle");
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
 const obtuse = getAngleType(120);
-// ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(obtuse, "Obtuse angle");
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 // ====> write your test here, and then add a line to pass the test in the function above
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
-// ====> write your test here, and then add a line to pass the test in the function above
\ No newline at end of file
+// ====> write your test here, and then add a line to pass the test in the function above
+const reflex = getAngleType(270);
+assertEquals(reflex, "Reflex angle");
diff --git a/Sprint-3/1-key-implement/2-is-proper-fraction.js b/Sprint-3/1-key-implement/2-is-proper-fraction.js
index 91583e941..0c8f68563 100644
--- a/Sprint-3/1-key-implement/2-is-proper-fraction.js
+++ b/Sprint-3/1-key-implement/2-is-proper-fraction.js
@@ -8,7 +8,8 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+  if (numerator < denominator) return true;
+  if (numerator >= denominator) return false;
 }
 
 // here's our helper again
@@ -40,14 +41,20 @@ assertEquals(improperFraction, false);
 // target output: true
 // Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.
 const negativeFraction = isProperFraction(-4, 7);
-// ====> complete with your assertion
+assertEquals(negativeFraction, true);
 
 // Equal Numerator and Denominator check:
 // Input: numerator = 3, denominator = 3
 // target output: false
 // Explanation: The fraction 3/3 is not a proper fraction because the numerator is equal to the denominator. The function should return false.
 const equalFraction = isProperFraction(3, 3);
-// ====> complete with your assertion
+assertEquals(equalFraction, false);
 
 // Stretch:
 // What other scenarios could you test for?
+// Zero Denominator check:
+// Input: numerator = 1, denominator = 0
+// target output: false
+// Explanation: The fraction 1/0 is undefined because division by zero is not allowed. The function should return false.
+const zeroDenominator = isProperFraction(1, 0);
+assertEquals(zeroDenominator, false);
diff --git a/Sprint-3/1-key-implement/3-get-card-value.js b/Sprint-3/1-key-implement/3-get-card-value.js
index aa1cc9f90..404adaf77 100644
--- a/Sprint-3/1-key-implement/3-get-card-value.js
+++ b/Sprint-3/1-key-implement/3-get-card-value.js
@@ -8,7 +8,14 @@
 // write one test at a time, and make it pass, build your solution up methodically
 // just make one change at a time -- don't rush -- programmers are deep and careful thinkers
 function getCardValue(card) {
-    if (rank === "A") return 11;
+  const rank = card.slice(0, -1);
+  if (rank === "A") return 11;
+
+  if (["K", "Q", "J", "10"].includes(rank)) return 10;
+  const num = Number(rank);
+  if (num >= 2 && num <= 9) return num;
+
+  throw new Error("Invalid card rank");
 }
 
 // You need to write assertions for your function to check it works in different cases
@@ -33,19 +40,44 @@ assertEquals(aceofSpades, 11);
 // When the function is called with such a card,
 // Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
 const fiveofHearts = getCardValue("5♥");
-// ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(fiveofHearts, 5);
 
 // Handle Face Cards (J, Q, K):
 // Given a card with a rank of "10," "J," "Q," or "K",
 // When the function is called with such a card,
 // Then it should return the value 10, as these cards are worth 10 points each in blackjack.
 
+const tenofDiamonds = getCardValue("10♦");
+assertEquals(tenofDiamonds, 10);
+
+const jackofClubs = getCardValue("J♣");
+assertEquals(jackofClubs, 10);
+
+const queenofSpades = getCardValue("Q♠");
+assertEquals(queenofSpades, 10);
+
+const kingofHearts = getCardValue("K♥");
+assertEquals(kingofHearts, 10);
+
 // Handle Ace (A):
 // Given a card with a rank of "A",
 // When the function is called with an Ace,
 // Then it should, by default, assume the Ace is worth 11 points, which is a common rule in blackjack.
 
+const aceOfClubs = getCardValue("A♣");
+assertEquals(aceOfClubs, 11);
+
 // Handle Invalid Cards:
 // Given a card with an invalid rank (neither a number nor a recognized face card),
 // When the function is called with such a card,
 // Then it should throw an error indicating "Invalid card rank."
+
+try {
+  getCardValue("1♠");
+  console.assert(false, "Expected an error to be thrown for invalid card");
+} catch (e) {
+  console.assert(
+    e.message === "Invalid card rank",
+    `Expected error message "Invalid card rank", got "${e.message}"`
+  );
+}

From 21679f7b93f77403833f62c7dc19c1d9f5818922 Mon Sep 17 00:00:00 2001
From: mirabellemorah <myrakuti@gmail.com>
Date: Mon, 30 Jun 2025 18:57:52 +0100
Subject: [PATCH 2/3] Provided answers to 2-mandatory-rewrite

---
 .../1-key-implement/2-is-proper-fraction.js   |  2 ++
 .../2-mandatory-rewrite/1-get-angle-type.js   | 19 ++++++++-----------
 .../1-get-angle-type.test.js                  | 16 ++++++++++++++++
 .../2-is-proper-fraction.js                   |  8 ++++----
 .../2-is-proper-fraction.test.js              |  9 +++++++++
 .../2-mandatory-rewrite/3-get-card-value.js   | 13 ++++++++++---
 .../3-get-card-value.test.js                  | 18 ++++++++++++++++++
 7 files changed, 67 insertions(+), 18 deletions(-)

diff --git a/Sprint-3/1-key-implement/2-is-proper-fraction.js b/Sprint-3/1-key-implement/2-is-proper-fraction.js
index 0c8f68563..c89190e0e 100644
--- a/Sprint-3/1-key-implement/2-is-proper-fraction.js
+++ b/Sprint-3/1-key-implement/2-is-proper-fraction.js
@@ -8,8 +8,10 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
+  if (denominator === 0) return false;
   if (numerator < denominator) return true;
   if (numerator >= denominator) return false;
+  
 }
 
 // here's our helper again
diff --git a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
index d61254bd7..acd053d3d 100644
--- a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
+++ b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
@@ -1,18 +1,15 @@
 function getAngleType(angle) {
   if (angle === 90) return "Right angle";
-  // replace with your completed function from key-implement
-
+  // read to the end, complete line 36, then pass your test here
+  else if (angle < 90) return "Acute angle";
+  else if (angle > 90 && angle < 180) return "Obtuse angle";
+  else if (angle === 180) return "Straight angle";
+  else if (angle > 180 && angle < 360) return "Reflex angle";
+  else return "Invalid angle";
 }
 
-
-
-
-
-
-
-
 // Don't get bogged down in this detail
 // Jest uses CommonJS module syntax by default as it's quite old
-// We will upgrade our approach to ES6 modules in the next course module, so for now 
+// We will upgrade our approach to ES6 modules in the next course module, so for now
 // we have just written the CommonJS module.exports syntax for you
-module.exports = getAngleType;
\ No newline at end of file
+module.exports = getAngleType;
diff --git a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
index b62827b7c..0ec2c3376 100644
--- a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
+++ b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
@@ -11,14 +11,30 @@ test("should identify right angle (90°)", () => {
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
 
+test("should identify acute angle (45°)", () => {
+  expect(getAngleType(45)).toEqual("Acute angle");
+});
+
 // Case 3: Identify Obtuse Angles:
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
 
+test("should identify obtuse angle (135°)", () => {
+  expect(getAngleType(135)).toEqual("Obtuse angle");
+});
+
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 
+test("should identify straight angle (180°)", () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
+
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
+
+test("should identify reflex angle (270°)", () => {
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});
diff --git a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
index 9836fe398..3b41d492b 100644
--- a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
+++ b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
@@ -1,6 +1,6 @@
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
-    // add your completed function from key-implement here
+  if (denominator === 0) return false;
+  if (numerator < denominator) return true;
+  if (numerator >= denominator) return false;
 }
-
-module.exports = isProperFraction;
\ No newline at end of file
+module.exports = isProperFraction;
diff --git a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
index ff1cc8173..7431fa82d 100644
--- a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
+++ b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
@@ -5,7 +5,16 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
+test("should return false for an improper fraction", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+});
 
 // Case 3: Identify Negative Fractions:
+test("should return false for a negative fraction", () => {
+  expect(isProperFraction(-4, 7)).toEqual(true);
+});
 
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false for equal numerator and denominator", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});
diff --git a/Sprint-3/2-mandatory-rewrite/3-get-card-value.js b/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
index 0d95d3736..846bdc0d8 100644
--- a/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
+++ b/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
@@ -1,5 +1,12 @@
 function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
+  const rank = card.slice(0, -1);
+  if (rank === "A") return 11;
+
+  if (["K", "Q", "J", "10"].includes(rank)) return 10;
+  const num = Number(rank);
+  if (num >= 2 && num <= 9) return num;
+
+  throw new Error("Invalid card rank");
 }
-module.exports = getCardValue;
\ No newline at end of file
+
+module.exports = getCardValue;
diff --git a/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js b/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
index 03a8e2f34..5d5bff7b9 100644
--- a/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
+++ b/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
@@ -6,6 +6,24 @@ test("should return 11 for Ace of Spades", () => {
     });
 
 // Case 2: Handle Number Cards (2-10):
+test("should return 5 for 5 of Hearts", () => {
+    const fiveofHearts = getCardValue("5♥");
+    expect(fiveofHearts).toEqual(5);
+});
+
 // Case 3: Handle Face Cards (J, Q, K):
+test("should return 10 for Jack of Diamonds", () => {
+    const jackofDiamonds = getCardValue("J♦");
+    expect(jackofDiamonds).toEqual(10);
+});
+
 // Case 4: Handle Ace (A):
+test("should return 11 for Ace of Spades", () => {
+    const aceofSpades = getCardValue("A♠");
+    expect(aceofSpades).toEqual(11);
+});
+
 // Case 5: Handle Invalid Cards:
+test("should throw an error for invalid card", () => {
+    expect(() => getCardValue("Invalid")).toThrow("Invalid card rank");
+});

From adae98b85575b36d8ef4046d691cf5014b2d588e Mon Sep 17 00:00:00 2001
From: mirabellemorah <myrakuti@gmail.com>
Date: Mon, 30 Jun 2025 19:45:06 +0100
Subject: [PATCH 3/3] Provided answers to 3-mandatory-practice/implement

---
 .../3-mandatory-practice/implement/count.js   | 10 +++++--
 .../implement/count.test.js                   |  7 +++++
 .../implement/get-ordinal-number.js           | 14 +++++++--
 .../implement/get-ordinal-number.test.js      | 12 ++++++--
 .../3-mandatory-practice/implement/repeat.js  | 14 +++++++--
 .../implement/repeat.test.js                  | 30 +++++++++++++++----
 6 files changed, 73 insertions(+), 14 deletions(-)

diff --git a/Sprint-3/3-mandatory-practice/implement/count.js b/Sprint-3/3-mandatory-practice/implement/count.js
index fce249650..d59e425d6 100644
--- a/Sprint-3/3-mandatory-practice/implement/count.js
+++ b/Sprint-3/3-mandatory-practice/implement/count.js
@@ -1,5 +1,11 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+  let count = 0;
+  for (let i = 0; i < stringOfCharacters.length; i++) {
+    if (stringOfCharacters[i] === findCharacter) {
+      count++;
+    }
+  }
+  return count;
 }
 
-module.exports = countChar;
\ No newline at end of file
+module.exports = countChar;
diff --git a/Sprint-3/3-mandatory-practice/implement/count.test.js b/Sprint-3/3-mandatory-practice/implement/count.test.js
index 42baf4b4b..2cc8c4515 100644
--- a/Sprint-3/3-mandatory-practice/implement/count.test.js
+++ b/Sprint-3/3-mandatory-practice/implement/count.test.js
@@ -22,3 +22,10 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+
+test("should return 0 when character does not exist in the string", () => {
+  const str = "hello";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
diff --git a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
index 24f528b0d..39cac0e3c 100644
--- a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
+++ b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
@@ -1,5 +1,15 @@
 function getOrdinalNumber(num) {
- return "1st";
+  if (typeof num !== "number" || !Number.isInteger(num)) {
+    throw new Error("Input must be an integer.");
+  }
+
+  const suffixes = ["th", "st", "nd", "rd"];
+  const remainder = num % 100;
+
+  return (
+    num +
+    (suffixes[(remainder - 20) % 10] || suffixes[remainder] || suffixes[0])
+  );
 }
 
-module.exports = getOrdinalNumber;
\ No newline at end of file
+module.exports = getOrdinalNumber;
diff --git a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
index 6d55dfbb4..ef27cdcd9 100644
--- a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
+++ b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
@@ -9,5 +9,13 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // Then the function should return "1st"
 
 test("should return '1st' for 1", () => {
-    expect(getOrdinalNumber(1)).toEqual("1st");
-    });
+  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");
+});
diff --git a/Sprint-3/3-mandatory-practice/implement/repeat.js b/Sprint-3/3-mandatory-practice/implement/repeat.js
index 621f9bd35..652ea3a62 100644
--- a/Sprint-3/3-mandatory-practice/implement/repeat.js
+++ b/Sprint-3/3-mandatory-practice/implement/repeat.js
@@ -1,5 +1,13 @@
-function repeat() {
-    return "hellohellohello";
+function repeat(str, count) {
+  if (typeof str !== "string") {
+    throw new Error("Input must be a string.");
+  }
+
+  if (!Number.isInteger(count) || count < 0) {
+    throw new Error("Count must be a non-negative integer");
+  }
+
+  return str.repeat(count);
 }
 
-module.exports = repeat;
\ No newline at end of file
+module.exports = repeat;
diff --git a/Sprint-3/3-mandatory-practice/implement/repeat.test.js b/Sprint-3/3-mandatory-practice/implement/repeat.test.js
index 8a4ab42ef..a61ea79c9 100644
--- a/Sprint-3/3-mandatory-practice/implement/repeat.test.js
+++ b/Sprint-3/3-mandatory-practice/implement/repeat.test.js
@@ -10,23 +10,43 @@ const repeat = require("./repeat");
 // Then it should repeat the str count times and return a new string containing the repeated str values.
 
 test("should repeat the string count times", () => {
-    const str = "hello";
-    const count = 3;
-    const repeatedStr = repeat(str, count);
-    expect(repeatedStr).toEqual("hellohellohello");
-    });
+  const str = "hello";
+  const count = 3;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hellohellohello");
+});
 
 // case: handle Count of 1:
 // Given a target string str and a count equal to 1,
 // When the repeat function is called with these inputs,
 // Then it should return the original str without repetition, ensuring that a count of 1 results in no repetition.
 
+test("should return the original string when count is 1", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
+
 // case: Handle Count of 0:
 // Given a target string str and a count equal to 0,
 // When the repeat function is called with these inputs,
 // Then it should return an empty string, ensuring that a count of 0 results in an empty output.
 
+test("should return an empty string when count is 0", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("");
+});
+
 // case: Negative Count:
 // Given a target string str and a negative integer count,
 // When the repeat function is called with these inputs,
 // Then it should throw an error or return an appropriate error message, as negative counts are not valid.
+
+test("should throw an error for negative count", () => {
+  const str = "hello";
+  const count = -2;
+  expect(() => repeat(str, count)).toThrow("Count must be a non-negative integer");
+});
\ No newline at end of file