ikrom-tools-ake-pro/21-dars.js

2

function checkPrime(n) {
  if (n < 2) return "tub son emas";

  for (let i = 2; i <= Math.sqrt(n); i++) {
    if (n % i === 0) {
      return "tub son emas";
    }
  }

  return "tub son";
}
function checktoq(n) {
  for (let i = 1; i < n; i++) {
    if (n[i] % 2 == 1) {
      console.log(n[i]);
    } else {
      console.log(n[i]);
    }
  }
}
function checkfibonacci(n) {
  let fib = [0, 1];

  for (let i = 2; i < n; i++) {
    fib[i] = fib[i - 1] + fib[i - 2];
  }

  return fib.slice(0, n);
}
function checkpalindrom(str) {
  str = str.toString();
  let teskari = str.split("").reverse().join("");

  return str === teskari;
}
function PhoneNumber(phone) {
  let digits = phone.replace(/\D/g, "");

  if (digits.length === 9) {
    digits = "998" + digits;
  }

  if (digits.length === 12 && digits.startsWith("998")) {
    return `+998 (${digits.slice(3, 5)}) ${digits.slice(5, 8)}-${digits.slice(
      8,
      10
    )}-${digits.slice(10, 12)}`;
  }

  return "Noto‘g‘ri raqam";
}
module.exports = {
  checkPrime,
  checkpalindrom,
  checkfibonacci,
  checktoq,
  PhoneNumber,
};