alexko30

function findNeedleElement(arr, element) {
  for (let i = 0; i < arr.length; i++) {
    if(arr[i] == element) {
      console.log(arr);
      console.log(`Needle element is found at ${i} posotion: ${element}`);
    }
  }
}

findNeedleElement(['petya', 'gus', 'sashko', 'alex', 'gena', 'german'], 'german');

alexko30

function makeInitialsFromName(strName) {
  const arrName = strName.split('');
  const firstLetter = strName.charAt(0).toUpperCase();
  let arrInitials = [];
  arrInitials.splice(0, 0, firstLetter, '. ')
  for (var i = 0; i < arrName.length; i++) {
    if (arrName[i] == ' ') {
      const secondLetter = arrName[i + 1].toUpperCase();
      arrInitials.splice(0, 0, secondLetter, '.');
      const initials = arrInitials.toString().replace(/,/g, '');

alexko30

function sumOfPositAndNegatElem(arr) {
  let positiveSum = 0;
  let negativeSum = 0;
  for (let i = 0; i < arr.length; i++) {
    if (arr[i] < 0 || arr[i] == 0) {
      negativeSum += arr[i];
    } else if (arr[i] > 0) {
      positiveSum += arr[i];
    }
  }

alexko30

function firstCharUpperCase(str) {
  console.log(str.charAt(0).toUpperCase() + str.slice(1));
}

firstCharUpperCase('ukraine');

alexko30

function removeFirstAndSecondCharacter(str) {
  const strArray = str.split('');
  const firstStarrPoint = 0;
  strArray.splice(firstStarrPoint, 1);
  strArray.pop();
  let strNew = strArray.toString().replace(/,/g, '');
  console.log(strNew);
}

alexko30

function sumTill(start, till) {
  if(start < till && till > 0) {
    let step = start;
    let result = start;
    let resultArray = [];
    resultArray.push(result);

    for (let i = 0; i < till; i++) {
      result += step;

alexko30

function yearCentury(year) {
  if (year >= 1 && year <= 100) {
    console.log(1, 'century');
  } else {
    const yearArray = String(year).split('');
    const arrayPoint = yearArray.length - 2;
    let checkValue = 0;
    for (var i = arrayPoint; i < yearArray.length; i++) {
      if (yearArray[i] == 0) {
        checkValue += 1;

alexko30

function cubicVolumeDifference(cub1, cub2) {
  let cubSum1 = 1;
  let cubSum2 = 1;

  for (let i = 0; i < cub1.length; i++) {
    cubSum1 *= cub1[i];
  }
  for (let i = 0; i < cub2.length; i++) {
    cubSum2 *= cub2[i];
  }

alexko30

function findDigit(number, nth) {
  if(nth <= 0) {
    console.log(-1);
  } else {
    const digits = (""+number).split("");
    const digitLength = digits.length;
    const ourNumIndex = digitLength - nth;
    console.log(digits[ourNumIndex]);
  }

alexko30

function automorphic(number) {
  const numberArr = Array.from(number.toString()).map(Number);
  const square = Math.pow(number, 2);
  const squareArr = Array.from(square.toString()).map(Number);
  const startElement = squareArr.length - numberArr.length;
  let flag = false;

  for (let i = 0, j = startElement; i < numberArr.length, j < squareArr.length; i++, j++) {
    flag = false;