07. Validity Checker

function solve(arr) {
  const x1 = Number(arr[0]);
  const y1 = Number(arr[1]);
  const x2 = Number(arr[2]);
  const y2 = Number(arr[3]);

  function distance(x1, y1, x2, y2) {
    const distH = x1 - x2;
    const distY = y1 - y2;
    return Math.sqrt(distH ** 2 + distY ** 2);
  }

  if (Number.isInteger(distance(x1, y1, 0, 0))) {
    console.log(`{${x1}, ${y1}} to {0, 0} is valid`);
  } else {
    console.log(`{${x1}, ${y1}} to {0, 0} is invalid`);
  }

  if (Number.isInteger(distance(x2, y2, 0, 0))) {
    console.log(`{${x2}, ${y2}} to {0, 0} is valid`);
  } else {
    console.log(`{${x2}, ${y2}} to {0, 0} is invalid`);
  }

  if (Number.isInteger(distance(x1, y1, x2, y2))) {
    console.log(`{${x1}, ${y1}} to {${x2}, ${y2}} is valid`);
  } else {
    console.log(`{${x1}, ${y1}} to {${x2}, ${y2}} is invalid`);
  }
}