JavaScript

❓ CHALLENGE

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

const result = array.map(num => Promise.resolve(num * 2));

console.log(result);

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❓ CHALLENGE

async function asyncSumOfSquares() {
  const numbers = [1, 2, 3, 4, 5];

  const result = await numbers.reduce(async (acc, num) => {
    const currentSquare = await Promise.resolve(num * num);
    return (await acc) + currentSquare;
  }, Promise.resolve(0));

  console.log(result);
}

asyncSumOfSquares();

Why JavaScript is so hard 😂

❓ CHALLENGE

const matrix = [
  [1, 2, 3],
  [4, 5, 6],
  [7, 8, 9],
];

async function asyncSumOfEvenNumbers(matrix) {
  const result = await matrix.flat().filter(async num => {
    return await Promise.resolve(num % 2 === 0);
  });

  return result.reduce((acc, num) => acc + num, 0);
}

asyncSumOfEvenNumbers(matrix).then(result => console.log(result));

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❓ CHALLENGE

async function asyncArrayOperations() {
  const array1 = [1, 2, 3];
  const array2 = [4, 5, 6];

  const result = await Promise.all([array1, array2].map(async arr => {
    return await arr.reduce(async (acc, num) => {
      return (await acc) + num;
    }, Promise.resolve(0));
  }));

  console.log(result);
}

asyncArrayOperations();

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❓ CHALLENGE

const matrix = [
  [2, 4],
  [6, 8],
];

const result = matrix.reduceRight((acc, row) => acc.concat(row.map(num => num * 2)), []);

console.log(result);

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❓ CHALLENGE

function* fibonacci() {
  let a = 0, b = 1;
  while (true) {
    yield a;
    [a, b] = [b, a + b];
  }
}

const fibSequence = Array.from({ length: 5 }, () => fibonacci().next().value);

console.log(fibSequence);

✌️ 😂

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