JavaScript

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CHALLENGE

function Car(make, model) {
  this.make = make;
  this.model = model;
}

Car.prototype.displayInfo = function () {
  return `Make: ${this.make}, Model: ${this.model}`;
};

const myCar = new Car('Toyota', 'Camry');

console.log(myCar.displayInfo());

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CHALLENGE

const words = ['apple', 'banana', 'cherry'];

const result = words.map(word => [...word].reduce((acc, char) => char + acc, ''));

console.log(result);

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❓ CHALLENGE

const numbers = [1, 2, 3, 4, 5];

const result = numbers.reduce((acc, num) => {
  if (num % 2 === 0) {
    acc.even += num;
  } else {
    acc.odd *= num;
  }
  return acc;
}, { even: 0, odd: 1 });

console.log(result);

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❓ CHALLENGE

const data = [
  { id: 1, name: 'Alice', age: 25, gender: 'Female' },
  { id: 2, name: 'Bob', age: 30, gender: 'Male' },
  { id: 3, name: 'Charlie', age: 22, gender: 'Male' },
  { id: 4, name: 'David', age: 35, gender: 'Male' },
];

const result = data.filter(person => person.gender === 'Male').map(person => person.age).reduce((acc, age) => acc + age, 0);

console.log(result);

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❓ CHALLENGE

const data = [1, 2, 3, 4, 5];

const result = data.flatMap(num => Array(num).fill(num * 2));

console.log(result);

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❓ CHALLENGE

const data = [1, 2, 3, 4, 5];

const result = data.reduce((acc, val) => acc.concat(Array.from({ length: val }, (_, index) => val + index)), []);

console.log(result);

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