patrickxrivera

// Example args
const filters = ['LOWER_LETTERS', 'NUMS'];
const pwLength = 5;

// ******************************************

/**
 * @param {number} pwLength
 * @param {string []} filters
 * @return {string}

patrickxrivera

// Example args
const filters = ['LOWER_LETTERS', 'NUMS'];
const pwLength = 5;

// ******************************************

/**
 * @param {number} pwLength
 * @param {string []} filters
 * @return {string}

patrickxrivera

const delete = (value, root) => {
  switch (true) {
    // value doesn't exist in BST
    case root === null:
      return null;
    
    // if value exists, it must be in right sub-tree 
    case value > root.value:
      root.right = this.delete(value, root.right);
      return root;

patrickxrivera

/**
 * @param {nums []} 
 * @param {targetSum Int}
 * @return {combination [int, int]}
 */

const findCombination = (nums, targetSum) => {
  let numsCache = new Set();

  for (let i = 0; i < nums.length; i++) {

patrickxrivera

const hasNeedle = (needle) => (currVal) => needle === currVal;

const isInHaystack = (needle, haystack) => haystack.some(hasNeedle(needle));

const needle = 'Foo';
const haystack = ["Bar", "Foo Bar", "Bar Foo", "Foo Foo"]

isInHaystack(needle, haystack);

patrickxrivera

const randomTypo = (msg) => {
  const NUM_OF_MESSAGES = 100;
  const NUM_OF_TYPOS = 10;
  const LETTER_CHAR_CODE_START = 65;
  const LETTER_CHAR_CODE_END = 122;
  const typoIndices = new Set();

  while (typoIndices.size < NUM_OF_TYPOS) {
    const randIdx = randBetween(0, NUM_OF_MESSAGES - 1);
    typoIndices.add(randIdx);

patrickxrivera

const readline = require('readline');

console.log('Welcome to Guessing Game!');

const Terminal = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

const App = {

patrickxrivera

const flip = (node) => {
  const queue = [node];

  while (queue.length) {
    const currNode = queue.shift();

    // swap
    [currNode.left, currNode.right] = [currNode.right, currNode.left];

    currNode.left && queue.push(currNode.left);

patrickxrivera

const isValid = (address) => address >= 0 && address <= 255;

const isValidIpAddress = (ipAddress) => {
  const ipAddressArray = ipAddress.split('.'); 
  return ipAddressArray.length === 4 && ipAddressArray.every(isValid);
}

patrickxrivera

const reduceString = (str, targetChar) => {
  for (let i = str.length - 1; i >= 0; i--) {
    if (str[i] !== targetChar) continue;

    i--;

    while (str[i] === targetChar) {
      str = str.slice(0, i) + str.slice(i + 1);
      i--;
    }