ArrayIteratorMethod.txt

// Task 1: Using forEach()
const cities = ["Tokyo", "Paris", "New York", "Kyoto", "Rome"];

cities.forEach(city => {
  console.log(city.toUpperCase());
});

/* Expected Output:
TOKYO
PARIS
NEW YORK
KYOTO
ROME
*/


// Task 2: Transforming with map()
const numbers = [1, 2, 3, 4, 5];

const squares = numbers.map(num => num ** 2);

console.log(squares);

/* Expected Output:
[1, 4, 9, 16, 25]
*/


// Task 3: Filtering with filter()
const scores = [85, 42, 90, 75, 30, 100];

const highScores = scores.filter(score => score >= 80);

console.log(highScores);

/* Expected Output:
[85, 90, 100]
*/


// Task 4: Finding with find() and findIndex()
const favoriteFood = ["Pho", "Tacos", "Sushi", "Burger", "Pasta"];

const longNameFood = favoriteFood.find(food => food.length > 4);
const longNameFoodIndex = favoriteFood.findIndex(food => food.length > 4);

console.log(longNameFood);
console.log(longNameFoodIndex);

/* Expected Output:
Tacos
1
*/


// Task 5: Checking conditions with some() and every()
const temperatures = [72, 85, 91, 68, 77];

const hasHotTemp = temperatures.some(temp => temp > 90);
const allMildTemp = temperatures.every(temp => temp > 50);

console.log([hasHotTemp, allMildTemp]);

/* Expected Output:
[true, true]
*/


// Task 6: Reducing with reduce()
const totalBudget = 200;
const prices = [45, 30, 60, 25];

const remainingBudget = prices.reduce((accumulator, currentPrice) => {
  return accumulator - currentPrice;
}, totalBudget);

console.log(remainingBudget);

/* Expected Output:
40
*/