karataev

const _ = require('lodash');

function series(arr, fn) {
  let result = [];

  return _.reduce(arr, (acc, item) => {
    acc = acc
      .then(() => fn(item))
      .then(res => result.push(res));
    return acc;

karataev

const allWords = require('russian-words');

function getCubesLettersHeap(cubes) {
  return cubes.reduce((acc, cube) => {
    const letters = cube.split('');
    letters.forEach(letter => {
      acc[letter] = acc[letter]? acc[letter] + 1 : 1;
    });
    return acc;
  }, {});

karataev

function getValidIpAddresses(str) {
  let result = [];
  for (let i = 1; i < str.length; i++) {
    let first = str.slice(0, i);
    if (first > 255) continue;
    let withoutFirst = str.slice(i);
    for (let j = 1; j < withoutFirst.length; j++) {
      let second = withoutFirst.slice(0, j);
      if (second > 255) continue;
      let withoutFirstSecond = withoutFirst.slice(j);

karataev

function padding(depth) {
  return new Array(depth).fill(' ').join('');
}

function walk(node, depth) {
  if (node.nodeType === 1) {
    console.log(padding(depth) + node.tagName);
    let children = Array.from(node.childNodes);
    children.forEach(item => walk(item, depth + 1));
  } else if (node.nodeType === 3) {