Made changes to exercise and test folder

exercises/01-variables/exercise.js

@@ -11,7 +11,13 @@
  */
 function createPersonInfo() {
   // TODO: Create and return an object with the specified properties
-
+  const person = {
+    name : "Alex Johnson",
+    age : 28,
+    city : "New York",
+    isEmployed : true
+  };
+  return person;
 }
 
 /**
@@ -23,7 +29,10 @@ function createPersonInfo() {
  */
 function calculateAge(birthYear) {
   // TODO: Calculate age by subtracting birth year from 2024
-
+  let x = 2024;
+  let y = birthYear;
+  let number = x-y;
+  return number;
 }
 
 /**
@@ -35,7 +44,8 @@ function calculateAge(birthYear) {
  */
 function formatFullName(firstName, lastName) {
   // TODO: Combine first and last name with a space between them
-
+  name = `${firstName} +" " + ${lastName};`
+  return name;
 }
 
 /**
@@ -46,9 +56,15 @@ function formatFullName(firstName, lastName) {
  */
 function checkAdult(age) {
   // TODO: Return true if age is 18 or greater, false otherwise
-
-}
+  let Adult = age>=18;
 
+  if (Adult){
+    return true;
+  }
+  else{
+    return false;
+  }
+}
 /**
  * Task 5: Convert Temperature
  * Convert temperature from Celsius to Fahrenheit
@@ -58,7 +74,9 @@ function checkAdult(age) {
  */
 function convertTemperature(celsius) {
   // TODO: Convert Celsius to Fahrenheit using the formula
-
+  let C = celsius;
+  let Fahrenheit = (C * 9/5) + 32
+  return `the temperature in farenheit is ${Fahrenheit}F`;
 }
 
 /**
@@ -70,7 +88,7 @@ function convertTemperature(celsius) {
  */
 function createGreeting(name, timeOfDay) {
   // TODO: Create a greeting message using template literals or string concatenation
-
+  return `Good ${timeOfDay}, ${name}`;
 }
 
 // DO NOT MODIFY: Export functions for testing

exercises/02-functions/exercise.js

@@ -10,7 +10,7 @@
  */
 function add(a, b) {
   // TODO: Return the sum of a and b
-
+  return a + b;
 }
 
 /**
@@ -23,7 +23,7 @@ function add(a, b) {
  */
 const multiply = (a, b) => {
   // TODO: Return the product of a and b
-
+  return a * b;
 };
 
 /**
@@ -35,7 +35,7 @@ const multiply = (a, b) => {
  */
 function greetUser(name = "Guest") {
   // TODO: Return a greeting message using the name parameter
-
+  return `Hello, ${name}!`;
 }
 
 /**
@@ -48,7 +48,7 @@ function greetUser(name = "Guest") {
 function calculateTotal(price, taxRate) {
   // TODO: Calculate and return the total price including tax
   // Formula: price + (price * taxRate)
-
+  return price + (price * taxRate);
 }
 
 /**
@@ -61,7 +61,12 @@ function calculateTotal(price, taxRate) {
 function createCounter() {
   // TODO: Create a counter variable and return a function that increments it
   // Hint: Use closure to maintain the counter state
-
+  let counter = 0;
+
+  return function increase(){
+    counter++;
+    return counter;
+  };
 }
 
 /**
@@ -75,7 +80,7 @@ function createCounter() {
 function processNumbers(numbers, callback) {
   // TODO: Create a new array by applying the callback to each number
   // Hint: Use a loop or array method like map()
-
+  return numbers.map(callback);
 }
 
 // DO NOT MODIFY: Export functions for testing

exercises/05-arrays/exercise.js

@@ -8,7 +8,8 @@
  */
 function createNumberArray() {
   // TODO: Create and return an array with numbers 1 through 5
-
+  let numbers = [1, 2, 3, 4, 5]; 
+  return numbers;
 }
 
 /**
@@ -22,7 +23,7 @@ function createNumberArray() {
 function addToEnd(array, element) {
   // TODO: Create a new array with the element added to the end
   // Hint: Use spread operator [...array, element] or concat()
-
+  let newNumbers = [...numbers, element];
 }
 
 /**
@@ -35,7 +36,7 @@ function addToEnd(array, element) {
 function removeFromStart(array) {
   // TODO: Return the first element of the array
   // Hint: Use array[0] or array indexing
-
+  return numbers[0];
 }
 
 /**
@@ -47,7 +48,7 @@ function removeFromStart(array) {
 function findLargest(numbers) {
   // TODO: Find and return the largest number
   // Hint: Use Math.max() with spread operator or a loop
-
+  return Math.max(...numbers);
 }
 
 /**
@@ -59,7 +60,13 @@ function findLargest(numbers) {
 function filterEvenNumbers(numbers) {
   // TODO: Filter the array to only include even numbers
   // Hint: Use filter() method and modulo operator (%)
-
+  const evenNumber = [];
+  for (const number of numbers) {
+    if (number % 2 == 0) {
+      evens.push(number);
+    }
+  }
+  return evenNumber;
 }
 
 /**
@@ -71,7 +78,11 @@ function filterEvenNumbers(numbers) {
 function sumArray(numbers) {
   // TODO: Calculate the sum of all numbers in the array
   // Hint: Use reduce() method or a loop
-
+  let sum = 0;
+  for (const number of numbers) {
+    sum += number;
+  }
+  return sum;
 }
 
 // DO NOT MODIFY: Export functions for testing

exercises/calculation-function.js → exercises/calculation-functions-exercise.js

@@ -337,10 +337,15 @@ function calculateTotalIncome(month) {
     // 2. Check if transaction.type === 'income'
     // 3. Check if transaction is in the specified month
     // 4. Add transaction.amount to total
-
+    for (const transaction of sampleTransactions) {
+        if (transaction.type === 'income' && isTransactionInMonth(transaction, month)) {
+            total += transaction.amount;
+        }
+    }
     return total;
 }
 
+
 /**
  * TODO 2: Calculate total expenses for a specific month
  * 
@@ -362,7 +367,11 @@ function calculateTotalExpenses(month) {
     let total = 0;
 
     // Your code here
-
+    for (const transaction of sampleTransactions){
+        if (transaction.type === 'expense' && isTransactionInMonth(transaction, month)){
+            total += transaction.amount;
+        }
+    }
     return total;
 }
 
@@ -385,10 +394,13 @@ function calculateTotalExpenses(month) {
 function calculateNetBalance(month) {
     // TODO: Implement this function
     // Hint: This should be a simple calculation using the two functions above
-
-    return 0; // Replace with your calculation
+
+    const income = calculateTotalIncome(month);
+    const expenses = calculateTotalExpenses(month);
+    return income - expenses;
 }
 
+
 /**
  * TODO 4: Calculate spending by category for a specific month
  * 
@@ -423,10 +435,20 @@ function calculateSpendingByCategory(month) {
     // 1. Loop through sampleTransactions
     // 2. Check if transaction is expense and in specified month
     // 3. Add amount to categoryTotals[transaction.category]
-
+
+    for (const transaction of sampleTransactions) {
+        if (transaction.type === 'expense' && isTransactionInMonth(transaction, month)) {
+            const category = transaction.category;
+            if (!categoryTotals[category]) {
+                categoryTotals[category] = 0;
+            }
+            categoryTotals[category] += transaction.amount;
+        }
+    }
     return categoryTotals;
 }
 
+
 /**
  * TODO 5: Calculate average transaction amount by type
  * 
@@ -455,7 +477,14 @@ function calculateAverageTransaction(type, month) {
     // 2. Check if transaction matches type and month
     // 3. Add to total and increment count
     // 4. Return total / count (handle division by zero)
-
+
+    for (const transaction of sampleTransactions) {
+        if (transaction.type === type && isTransactionInMonth(transaction, month)) {
+            total += transaction.amount;
+            count++;
+        }
+    }
+
     return count > 0 ? total / count : 0;
 }
 
@@ -485,7 +514,15 @@ function findLargestExpense(month) {
     // 2. Check if transaction is expense and in specified month
     // 3. Compare amount with largestAmount
     // 4. Update largestTransaction and largestAmount if bigger
-
+
+    for (const transaction of sampleTransactions) {
+        if (transaction.type === 'expense' && isTransactionInMonth(transaction, month)) {
+            if (transaction.amount > largestAmount) {
+                largestAmount = transaction.amount;
+                largestTransaction = transaction;
+            }
+        }
+    }
     return largestTransaction;
 }
 
@@ -515,8 +552,10 @@ function calculateSavingsRate(month) {
     // 1. Calculate savings (income - expenses)
     // 2. Calculate percentage (savings / income * 100)
     // 3. Handle case where income is 0
-
-    return 0; // Replace with your calculation
+
+    if (income === 0) return 0;
+    const savings = income - expenses;
+    return parseFloat(((savings / income) * 100).toFixed(2));
 }
 
 /**
@@ -544,13 +583,19 @@ function calculateSavingsRate(month) {
 function getMonthSummary(month) {
     // TODO: Implement this function
     // Use the functions you've already implemented
-
+
+    const totalIncome = calculateTotalIncome(month);
+    const totalExpenses = calculateTotalExpenses(month);
+    const netBalance = totalIncome - totalExpenses;
+    const savingsRate = calculateSavingsRate(month);
+    const transactionCount = sampleTransactions.filter(t => isTransactionInMonth(t, month)).length;
+
     return {
-        totalIncome: 0,
-        totalExpenses: 0,
-        netBalance: 0,
-        savingsRate: 0,
-        transactionCount: 0
+        totalIncome,
+        totalExpenses,
+        netBalance,
+        savingsRate,
+        transactionCount
     };
 }
 
@@ -566,9 +611,13 @@ function getMonthSummary(month) {
  */
 function findTransactionsAboveAmount(amount, month) {
     // TODO: Implement this bonus function
-    return [];
+
+    return sampleTransactions.filter(transaction =>
+        isTransactionInMonth(transaction, month) && transaction.amount > amount
+    );
 }
 
+
 /**
  * BONUS 2: Calculate month-over-month growth
  * @param {string} currentMonth - Current month in YYYY-MM format
@@ -577,6 +626,8 @@ function findTransactionsAboveAmount(amount, month) {
  */
 function calculateMonthOverMonthGrowth(currentMonth, previousMonth) {
     // TODO: Implement this bonus function
+
+
     return {
         incomeGrowth: 0,
         expenseGrowth: 0

exercises/calculation-functions-test.js

@@ -382,21 +382,21 @@ function testFindLargestExpense() {
         'December 2024 (no data) should return null'
     );
 
-    // Test March 2024 - should be education ($400)
+    // Test March 2024 - should be housing ($1200)
     const mar2024LargestExpense = {
-        id: '28',
+        id: '23',
         type: 'expense',
-        amount: 400,
-        category: 'education',
-        description: 'Online Course',
-        date: '2024-03-18'
+        amount: 1200,
+        category: 'housing',
+        description: 'Monthly Rent',
+        date: '2024-03-01'
     };
 
     test(
         'findLargestExpense-Mar2024',
         findLargestExpense('2024-03'),
         mar2024LargestExpense,
-        'March 2024 largest expense should be education ($400)'
+        'March 2024 largest expense should be housing ($1200)'
     );
 }