From c4b663d872ba5b7f815e70c1adfe499d1b2a1ded Mon Sep 17 00:00:00 2001
From: Richard Frimpong <richardfrimpongalx@gmail.com>
Date: Fri, 13 Mar 2026 20:27:59 +0000
Subject: [PATCH 1/6] Fix median implementation in sprint 1 fix project

---
 Sprint-1/fix/median.js | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/Sprint-1/fix/median.js b/Sprint-1/fix/median.js
index b22590bc6..abb7fd2e9 100644
--- a/Sprint-1/fix/median.js
+++ b/Sprint-1/fix/median.js
@@ -6,9 +6,33 @@
 // or 'list' has mixed values (the function is expected to sort only numbers).
 
 function calculateMedian(list) {
-  const middleIndex = Math.floor(list.length / 2);
-  const median = list.splice(middleIndex, 1)[0];
-  return median;
+  // Return null immediately if the input is not an array
+  if (!Array.isArray(list)) {
+    return null;
+  }
+
+  // Keep only real numeric values
+  const numbersOnly = list.filter(
+    (item) => typeof item === "number" && !Number.isNaN(item)
+  );
+
+  // Return null if the array contains no numbers
+  if (numbersOnly.length === 0) {
+    return null;
+  }
+
+  // Create a sorted copy so the original input is not changed
+  const sortedNumbers = [...numbersOnly].sort((a, b) => a - b);
+
+  const middleIndex = Math.floor(sortedNumbers.length / 2);
+
+  // For an even-length array, median is the average of the two middle values
+  if (sortedNumbers.length % 2 === 0) {
+    return (sortedNumbers[middleIndex - 1] + sortedNumbers[middleIndex]) / 2;
+  }
+
+  // For an odd-length array, median is the middle value
+  return sortedNumbers[middleIndex];
 }
 
 module.exports = calculateMedian;

From 4ee9bf8efd19993b53f06617761a81af933febf6 Mon Sep 17 00:00:00 2001
From: Richard Frimpong <richardfrimpongalx@gmail.com>
Date: Fri, 13 Mar 2026 21:22:28 +0000
Subject: [PATCH 2/6] Implement sprint 1 array exercises

---
 Sprint-1/implement/dedupe.js      | 18 +++++++++++++++++-
 Sprint-1/implement/dedupe.test.js | 20 ++++++++++++++++++--
 Sprint-1/implement/max.js         | 15 +++++++++++++++
 Sprint-1/implement/max.test.js    | 23 +++++++++++++++++++++--
 Sprint-1/implement/sum.js         | 13 +++++++++++++
 Sprint-1/implement/sum.test.js    | 19 ++++++++++++++++++-
 6 files changed, 102 insertions(+), 6 deletions(-)

diff --git a/Sprint-1/implement/dedupe.js b/Sprint-1/implement/dedupe.js
index 781e8718a..f8494b4a5 100644
--- a/Sprint-1/implement/dedupe.js
+++ b/Sprint-1/implement/dedupe.js
@@ -1 +1,17 @@
-function dedupe() {}
+// Return a new array with duplicate values removed.
+// Keep the first occurrence of each value.
+
+function dedupe(elements) {
+  const uniqueElements = [];
+
+  for (const element of elements) {
+    // Add the element only if it is not already in the result array
+    if (!uniqueElements.includes(element)) {
+      uniqueElements.push(element);
+    }
+  }
+
+  return uniqueElements;
+}
+
+module.exports = dedupe;
diff --git a/Sprint-1/implement/dedupe.test.js b/Sprint-1/implement/dedupe.test.js
index 23e0f8638..0360f8e81 100644
--- a/Sprint-1/implement/dedupe.test.js
+++ b/Sprint-1/implement/dedupe.test.js
@@ -2,7 +2,7 @@ const dedupe = require("./dedupe.js");
 /*
 Dedupe Array
 
-📖 Dedupe means **deduplicate**
+📖 Dedupe means deduplicate
 
 In this kata, you will need to deduplicate the elements of an array
 
@@ -16,12 +16,28 @@ E.g. dedupe([1, 2, 1]) target output: [1, 2]
 // Given an empty array
 // When passed to the dedupe function
 // Then it should return an empty array
-test.todo("given an empty array, it returns an empty array");
+test("given an empty array, it returns an empty array", () => {
+  expect(dedupe([])).toEqual([]);
+});
 
 // Given an array with no duplicates
 // When passed to the dedupe function
 // Then it should return a copy of the original array
+test("given an array with no duplicates, it returns the same values", () => {
+  expect(dedupe([1, 2, 3])).toEqual([1, 2, 3]);
+});
 
 // Given an array with strings or numbers
 // When passed to the dedupe function
 // Then it should remove the duplicate values, preserving the first occurence of each element
+test("given an array with duplicate strings, removes duplicates and preserves first occurrence", () => {
+  expect(dedupe(["a", "a", "a", "b", "b", "c"])).toEqual(["a", "b", "c"]);
+});
+
+test("given an array with duplicate numbers, removes duplicates and preserves first occurrence", () => {
+  expect(dedupe([5, 1, 1, 2, 3, 2, 5, 8])).toEqual([5, 1, 2, 3, 8]);
+});
+
+test("given a mixed duplicate order, removes duplicates and preserves first occurrence", () => {
+  expect(dedupe([1, 2, 1])).toEqual([1, 2]);
+});
diff --git a/Sprint-1/implement/max.js b/Sprint-1/implement/max.js
index 6dd76378e..df7d3f86b 100644
--- a/Sprint-1/implement/max.js
+++ b/Sprint-1/implement/max.js
@@ -1,4 +1,19 @@
+// Find the largest numerical value in an array.
+// Non-number values should be ignored.
+
 function findMax(elements) {
+  let maxValue = -Infinity;
+
+  for (const element of elements) {
+    // Only compare values that are real numbers
+    if (typeof element === "number" && !Number.isNaN(element)) {
+      if (element > maxValue) {
+        maxValue = element;
+      }
+    }
+  }
+
+  return maxValue;
 }
 
 module.exports = findMax;
diff --git a/Sprint-1/implement/max.test.js b/Sprint-1/implement/max.test.js
index 82f18fd88..95f92f165 100644
--- a/Sprint-1/implement/max.test.js
+++ b/Sprint-1/implement/max.test.js
@@ -15,29 +15,48 @@ const findMax = require("./max.js");
 // Given an empty array
 // When passed to the max function
 // Then it should return -Infinity
-// Delete this test.todo and replace it with a test.
-test.todo("given an empty array, returns -Infinity");
+test("given an empty array, returns -Infinity", () => {
+  expect(findMax([])).toBe(-Infinity);
+});
 
 // Given an array with one number
 // When passed to the max function
 // Then it should return that number
+test("given an array with one number, returns that number", () => {
+  expect(findMax([42])).toBe(42);
+});
 
 // Given an array with both positive and negative numbers
 // When passed to the max function
 // Then it should return the largest number overall
+test("given an array with positive and negative numbers, returns the largest number", () => {
+  expect(findMax([-10, 3, 25, -1])).toBe(25);
+});
 
 // Given an array with just negative numbers
 // When passed to the max function
 // Then it should return the closest one to zero
+test("given an array with only negative numbers, returns the largest one", () => {
+  expect(findMax([-9, -2, -15, -4])).toBe(-2);
+});
 
 // Given an array with decimal numbers
 // When passed to the max function
 // Then it should return the largest decimal number
+test("given an array with decimal numbers, returns the largest decimal", () => {
+  expect(findMax([1.2, 3.8, 2.4])).toBe(3.8);
+});
 
 // Given an array with non-number values
 // When passed to the max function
 // Then it should return the max and ignore non-numeric values
+test("given an array with non-number values, ignores them and returns the max", () => {
+  expect(findMax(["hey", 10, "hi", 60, 10])).toBe(60);
+});
 
 // Given an array with only non-number values
 // When passed to the max function
 // Then it should return the least surprising value given how it behaves for all other inputs
+test("given an array with only non-number values, returns -Infinity", () => {
+  expect(findMax(["apple", null, undefined, "banana"])).toBe(-Infinity);
+});
diff --git a/Sprint-1/implement/sum.js b/Sprint-1/implement/sum.js
index 9062aafe3..1a0c9ddb3 100644
--- a/Sprint-1/implement/sum.js
+++ b/Sprint-1/implement/sum.js
@@ -1,4 +1,17 @@
+// Sum the numerical values in an array.
+// Non-number values should be ignored.
+
 function sum(elements) {
+  let total = 0;
+
+  for (const element of elements) {
+    // Only add values that are real numbers
+    if (typeof element === "number" && !Number.isNaN(element)) {
+      total += element;
+    }
+  }
+
+  return total;
 }
 
 module.exports = sum;
diff --git a/Sprint-1/implement/sum.test.js b/Sprint-1/implement/sum.test.js
index dd0a090ca..67e440741 100644
--- a/Sprint-1/implement/sum.test.js
+++ b/Sprint-1/implement/sum.test.js
@@ -13,24 +13,41 @@ const sum = require("./sum.js");
 // Given an empty array
 // When passed to the sum function
 // Then it should return 0
-test.todo("given an empty array, returns 0")
+test("given an empty array, returns 0", () => {
+  expect(sum([])).toBe(0);
+});
 
 // Given an array with just one number
 // When passed to the sum function
 // Then it should return that number
+test("given an array with one number, returns that number", () => {
+  expect(sum([7])).toBe(7);
+});
 
 // Given an array containing negative numbers
 // When passed to the sum function
 // Then it should still return the correct total sum
+test("given an array with negative numbers, returns the correct sum", () => {
+  expect(sum([-5, 10, -2])).toBe(3);
+});
 
 // Given an array with decimal/float numbers
 // When passed to the sum function
 // Then it should return the correct total sum
+test("given an array with decimal numbers, returns the correct sum", () => {
+  expect(sum([1.5, 2.5, 3])).toBe(7);
+});
 
 // Given an array containing non-number values
 // When passed to the sum function
 // Then it should ignore the non-numerical values and return the sum of the numerical elements
+test("given an array with non-number values, ignores them and sums only numbers", () => {
+  expect(sum(["hey", 10, "hi", 60, 10])).toBe(80);
+});
 
 // Given an array with only non-number values
 // When passed to the sum function
 // Then it should return the least surprising value given how it behaves for all other inputs
+test("given an array with only non-number values, returns 0", () => {
+  expect(sum(["apple", null, undefined, "banana"])).toBe(0);
+});

From 1b6cc9b1f4c6bf23abe8aa1d9307f6de9e697a2f Mon Sep 17 00:00:00 2001
From: Richard Frimpong <richardfrimpongalx@gmail.com>
Date: Fri, 13 Mar 2026 21:34:50 +0000
Subject: [PATCH 3/6] Refactor includes implementation to use for...of loop

---
 Sprint-1/refactor/includes.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Sprint-1/refactor/includes.js b/Sprint-1/refactor/includes.js
index 29dad81f0..145603948 100644
--- a/Sprint-1/refactor/includes.js
+++ b/Sprint-1/refactor/includes.js
@@ -1,12 +1,15 @@
 // Refactor the implementation of includes to use a for...of loop
 
 function includes(list, target) {
-  for (let index = 0; index < list.length; index++) {
-    const element = list[index];
+  // Loop through each element in the list using a for...of loop
+  for (const element of list) {
+    // If the current element matches the target, return true
     if (element === target) {
       return true;
     }
   }
+
+  // If the loop finishes without finding the target, return false
   return false;
 }
 

From 2993b07048f401c8f5024f3040892c7fb69296f3 Mon Sep 17 00:00:00 2001
From: Richard Frimpong <richardfrimpongalx@gmail.com>
Date: Thu, 19 Mar 2026 01:49:14 +0000
Subject: [PATCH 4/6] Address mentor feedback for sprint 1 data groups

---
 Sprint-1/fix/median.js            | 19 +++++++++++++++++++
 Sprint-1/implement/dedupe.test.js | 13 +++++++++++++
 Sprint-1/implement/max.js         |  5 +++++
 Sprint-1/implement/max.test.js    |  4 ++++
 Sprint-1/implement/sum.js         |  4 ++++
 Sprint-1/implement/sum.test.js    |  4 ++++
 6 files changed, 49 insertions(+)

diff --git a/Sprint-1/fix/median.js b/Sprint-1/fix/median.js
index abb7fd2e9..11f4ef59f 100644
--- a/Sprint-1/fix/median.js
+++ b/Sprint-1/fix/median.js
@@ -11,27 +11,46 @@ function calculateMedian(list) {
     return null;
   }
 
+<<<<<<< HEAD
   // Keep only real numeric values
   const numbersOnly = list.filter(
     (item) => typeof item === "number" && !Number.isNaN(item)
   );
 
   // Return null if the array contains no numbers
+=======
+  // filter() returns a new array, so this does not modify the original input
+  const numbersOnly = list.filter((item) => Number.isFinite(item));
+
+  // Return null if there are no numeric values
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
   if (numbersOnly.length === 0) {
     return null;
   }
 
+<<<<<<< HEAD
   // Create a sorted copy so the original input is not changed
   const sortedNumbers = [...numbersOnly].sort((a, b) => a - b);
 
   const middleIndex = Math.floor(sortedNumbers.length / 2);
 
   // For an even-length array, median is the average of the two middle values
+=======
+  // Safe to sort directly because numbersOnly is already a new array
+  const sortedNumbers = numbersOnly.sort((a, b) => a - b);
+  const middleIndex = Math.floor(sortedNumbers.length / 2);
+
+  // Even number of values: return the average of the two middle values
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
   if (sortedNumbers.length % 2 === 0) {
     return (sortedNumbers[middleIndex - 1] + sortedNumbers[middleIndex]) / 2;
   }
 
+<<<<<<< HEAD
   // For an odd-length array, median is the middle value
+=======
+  // Odd number of values: return the middle value
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
   return sortedNumbers[middleIndex];
 }
 
diff --git a/Sprint-1/implement/dedupe.test.js b/Sprint-1/implement/dedupe.test.js
index 0360f8e81..a1cc9b404 100644
--- a/Sprint-1/implement/dedupe.test.js
+++ b/Sprint-1/implement/dedupe.test.js
@@ -2,7 +2,11 @@ const dedupe = require("./dedupe.js");
 /*
 Dedupe Array
 
+<<<<<<< HEAD
 📖 Dedupe means deduplicate
+=======
+ Dedupe means deduplicate
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 
 In this kata, you will need to deduplicate the elements of an array
 
@@ -23,8 +27,17 @@ test("given an empty array, it returns an empty array", () => {
 // Given an array with no duplicates
 // When passed to the dedupe function
 // Then it should return a copy of the original array
+<<<<<<< HEAD
 test("given an array with no duplicates, it returns the same values", () => {
   expect(dedupe([1, 2, 3])).toEqual([1, 2, 3]);
+=======
+test("given an array with no duplicates, it returns a copy of the original array", () => {
+  const input = [1, 2, 3];
+  const result = dedupe(input);
+
+  expect(result).toEqual(input);
+  expect(result).not.toBe(input);
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 });
 
 // Given an array with strings or numbers
diff --git a/Sprint-1/implement/max.js b/Sprint-1/implement/max.js
index df7d3f86b..3e0d7fdc5 100644
--- a/Sprint-1/implement/max.js
+++ b/Sprint-1/implement/max.js
@@ -5,11 +5,16 @@ function findMax(elements) {
   let maxValue = -Infinity;
 
   for (const element of elements) {
+<<<<<<< HEAD
     // Only compare values that are real numbers
     if (typeof element === "number" && !Number.isNaN(element)) {
       if (element > maxValue) {
         maxValue = element;
       }
+=======
+    if (Number.isFinite(element) && element > maxValue) {
+      maxValue = element;
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
     }
   }
 
diff --git a/Sprint-1/implement/max.test.js b/Sprint-1/implement/max.test.js
index 95f92f165..0b586673f 100644
--- a/Sprint-1/implement/max.test.js
+++ b/Sprint-1/implement/max.test.js
@@ -51,7 +51,11 @@ test("given an array with decimal numbers, returns the largest decimal", () => {
 // When passed to the max function
 // Then it should return the max and ignore non-numeric values
 test("given an array with non-number values, ignores them and returns the max", () => {
+<<<<<<< HEAD
   expect(findMax(["hey", 10, "hi", 60, 10])).toBe(60);
+=======
+  expect(findMax(["hey", 10, "300", "hi", 60, 10])).toBe(60);
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 });
 
 // Given an array with only non-number values
diff --git a/Sprint-1/implement/sum.js b/Sprint-1/implement/sum.js
index 1a0c9ddb3..806e3fbe3 100644
--- a/Sprint-1/implement/sum.js
+++ b/Sprint-1/implement/sum.js
@@ -5,8 +5,12 @@ function sum(elements) {
   let total = 0;
 
   for (const element of elements) {
+<<<<<<< HEAD
     // Only add values that are real numbers
     if (typeof element === "number" && !Number.isNaN(element)) {
+=======
+    if (Number.isFinite(element)) {
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
       total += element;
     }
   }
diff --git a/Sprint-1/implement/sum.test.js b/Sprint-1/implement/sum.test.js
index 67e440741..f87cbf953 100644
--- a/Sprint-1/implement/sum.test.js
+++ b/Sprint-1/implement/sum.test.js
@@ -35,7 +35,11 @@ test("given an array with negative numbers, returns the correct sum", () => {
 // When passed to the sum function
 // Then it should return the correct total sum
 test("given an array with decimal numbers, returns the correct sum", () => {
+<<<<<<< HEAD
   expect(sum([1.5, 2.5, 3])).toBe(7);
+=======
+  expect(sum([1.2, 0.6, 0.005])).toBeCloseTo(1.805, 10);
+>>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 });
 
 // Given an array containing non-number values

From 8bd7f4ed9d37c85648fa172d9d4dfb7d8e3edad2 Mon Sep 17 00:00:00 2001
From: Richard Frimpong <richardfrimpongalx@gmail.com>
Date: Fri, 20 Mar 2026 02:25:19 +0000
Subject: [PATCH 5/6] Resolve sprint 1 merge conflicts and apply mentor
 feedback

---
 Sprint-1/fix/median.js            | 22 ----------------------
 Sprint-1/implement/dedupe.test.js |  9 ---------
 Sprint-1/implement/max.js         | 10 +---------
 Sprint-1/implement/max.test.js    |  4 ----
 Sprint-1/implement/sum.js         |  5 -----
 Sprint-1/implement/sum.test.js    |  4 ----
 6 files changed, 1 insertion(+), 53 deletions(-)

diff --git a/Sprint-1/fix/median.js b/Sprint-1/fix/median.js
index 11f4ef59f..01b74c403 100644
--- a/Sprint-1/fix/median.js
+++ b/Sprint-1/fix/median.js
@@ -11,46 +11,24 @@ function calculateMedian(list) {
     return null;
   }
 
-<<<<<<< HEAD
-  // Keep only real numeric values
-  const numbersOnly = list.filter(
-    (item) => typeof item === "number" && !Number.isNaN(item)
-  );
-
-  // Return null if the array contains no numbers
-=======
   // filter() returns a new array, so this does not modify the original input
   const numbersOnly = list.filter((item) => Number.isFinite(item));
 
   // Return null if there are no numeric values
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
   if (numbersOnly.length === 0) {
     return null;
   }
 
-<<<<<<< HEAD
-  // Create a sorted copy so the original input is not changed
-  const sortedNumbers = [...numbersOnly].sort((a, b) => a - b);
-
-  const middleIndex = Math.floor(sortedNumbers.length / 2);
-
-  // For an even-length array, median is the average of the two middle values
-=======
   // Safe to sort directly because numbersOnly is already a new array
   const sortedNumbers = numbersOnly.sort((a, b) => a - b);
   const middleIndex = Math.floor(sortedNumbers.length / 2);
 
   // Even number of values: return the average of the two middle values
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
   if (sortedNumbers.length % 2 === 0) {
     return (sortedNumbers[middleIndex - 1] + sortedNumbers[middleIndex]) / 2;
   }
 
-<<<<<<< HEAD
-  // For an odd-length array, median is the middle value
-=======
   // Odd number of values: return the middle value
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
   return sortedNumbers[middleIndex];
 }
 
diff --git a/Sprint-1/implement/dedupe.test.js b/Sprint-1/implement/dedupe.test.js
index a1cc9b404..1bcda7a54 100644
--- a/Sprint-1/implement/dedupe.test.js
+++ b/Sprint-1/implement/dedupe.test.js
@@ -2,11 +2,7 @@ const dedupe = require("./dedupe.js");
 /*
 Dedupe Array
 
-<<<<<<< HEAD
 📖 Dedupe means deduplicate
-=======
- Dedupe means deduplicate
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 
 In this kata, you will need to deduplicate the elements of an array
 
@@ -27,17 +23,12 @@ test("given an empty array, it returns an empty array", () => {
 // Given an array with no duplicates
 // When passed to the dedupe function
 // Then it should return a copy of the original array
-<<<<<<< HEAD
-test("given an array with no duplicates, it returns the same values", () => {
-  expect(dedupe([1, 2, 3])).toEqual([1, 2, 3]);
-=======
 test("given an array with no duplicates, it returns a copy of the original array", () => {
   const input = [1, 2, 3];
   const result = dedupe(input);
 
   expect(result).toEqual(input);
   expect(result).not.toBe(input);
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 });
 
 // Given an array with strings or numbers
diff --git a/Sprint-1/implement/max.js b/Sprint-1/implement/max.js
index 3e0d7fdc5..dc71d3af4 100644
--- a/Sprint-1/implement/max.js
+++ b/Sprint-1/implement/max.js
@@ -5,20 +5,12 @@ function findMax(elements) {
   let maxValue = -Infinity;
 
   for (const element of elements) {
-<<<<<<< HEAD
-    // Only compare values that are real numbers
-    if (typeof element === "number" && !Number.isNaN(element)) {
-      if (element > maxValue) {
-        maxValue = element;
-      }
-=======
     if (Number.isFinite(element) && element > maxValue) {
       maxValue = element;
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
     }
   }
 
   return maxValue;
 }
 
-module.exports = findMax;
+module.exports = findMax;
\ No newline at end of file
diff --git a/Sprint-1/implement/max.test.js b/Sprint-1/implement/max.test.js
index 0b586673f..ebb57b922 100644
--- a/Sprint-1/implement/max.test.js
+++ b/Sprint-1/implement/max.test.js
@@ -51,11 +51,7 @@ test("given an array with decimal numbers, returns the largest decimal", () => {
 // When passed to the max function
 // Then it should return the max and ignore non-numeric values
 test("given an array with non-number values, ignores them and returns the max", () => {
-<<<<<<< HEAD
-  expect(findMax(["hey", 10, "hi", 60, 10])).toBe(60);
-=======
   expect(findMax(["hey", 10, "300", "hi", 60, 10])).toBe(60);
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 });
 
 // Given an array with only non-number values
diff --git a/Sprint-1/implement/sum.js b/Sprint-1/implement/sum.js
index 806e3fbe3..59f5ecc83 100644
--- a/Sprint-1/implement/sum.js
+++ b/Sprint-1/implement/sum.js
@@ -5,12 +5,7 @@ function sum(elements) {
   let total = 0;
 
   for (const element of elements) {
-<<<<<<< HEAD
-    // Only add values that are real numbers
-    if (typeof element === "number" && !Number.isNaN(element)) {
-=======
     if (Number.isFinite(element)) {
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
       total += element;
     }
   }
diff --git a/Sprint-1/implement/sum.test.js b/Sprint-1/implement/sum.test.js
index f87cbf953..0698757ef 100644
--- a/Sprint-1/implement/sum.test.js
+++ b/Sprint-1/implement/sum.test.js
@@ -35,11 +35,7 @@ test("given an array with negative numbers, returns the correct sum", () => {
 // When passed to the sum function
 // Then it should return the correct total sum
 test("given an array with decimal numbers, returns the correct sum", () => {
-<<<<<<< HEAD
-  expect(sum([1.5, 2.5, 3])).toBe(7);
-=======
   expect(sum([1.2, 0.6, 0.005])).toBeCloseTo(1.805, 10);
->>>>>>> a22ed15 (Address mentor feedback for sprint 1 data groups)
 });
 
 // Given an array containing non-number values

From bbecf91fa9f124db791ad736e63191dd1f70feda Mon Sep 17 00:00:00 2001
From: Richard Frimpong <richardfrimpongalx@gmail.com>
Date: Fri, 20 Mar 2026 11:56:39 +0000
Subject: [PATCH 6/6] Improve dedupe test to ensure input is not mutated

---
 Sprint-1/implement/dedupe.test.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Sprint-1/implement/dedupe.test.js b/Sprint-1/implement/dedupe.test.js
index 1bcda7a54..4674094bd 100644
--- a/Sprint-1/implement/dedupe.test.js
+++ b/Sprint-1/implement/dedupe.test.js
@@ -25,10 +25,13 @@ test("given an empty array, it returns an empty array", () => {
 // Then it should return a copy of the original array
 test("given an array with no duplicates, it returns a copy of the original array", () => {
   const input = [1, 2, 3];
+  const expected = [1, 2, 3];
+
   const result = dedupe(input);
 
-  expect(result).toEqual(input);
+  expect(result).toEqual(expected);
   expect(result).not.toBe(input);
+  expect(input).toEqual([1, 2, 3]);
 });
 
 // Given an array with strings or numbers