codingwithrachel

//reverse string

function solution(str){
  if(str === "") return "";
  return solution(str.substr(1,str.length-1)) + str[0];
}


//fibonacci numbers
function fibonacci(num) {

codingwithrachel

//spiral

var spiral = function(n){

    var direction;
    x=0
    y=0
    resultArray = [[0,0]]
    for (var k=1; k < n; k++){
        direction = k%2;

codingwithrachel

//All, none, any

Array.prototype.all = function (p) {
  return this.length > 0 && this.filter(p).length === this.length;
};

Array.prototype.none = function (p) {
  return this.filter(p).length === 0;
};

codingwithrachel

//find count of most frequent item in array
function mostFrequentItemCount(store) {
  var frequency = {}
  var max = 0;
  var result;
  for (var v in store) {
    frequency[store[v]] = (frequency[store[v]] || 0)+1;
    if(frequency[store[v]] > max) {
      max = frequency[store[v]];
    //   result = store[v];

codingwithrachel

//detect pangram (has all alphabet characters)
function isPangram(string){
  var alphabets = "a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z"
  var a = alphabets.split(",")
  string = string.replace(/[^a-zA-Z0-9]+/g,"").toLowerCase()
  for(var i=0;i<a.length;i++) {
      if(string.indexOf(a[i]) === -1) return false;
  }
  return true;
}

codingwithrachel

function count(file) {
  var lines = file.split("\n")
  var wordToCounterMap = {}
  var wordToLineMap = {}

  for(var k = 0; k < lines.length; k++) {
    countWords(lines[k].split(" "), k)
  }

  function countWords(words, lineNumber) {

codingwithrachel

function mergeIntervals(intervals) {
  if(intervals.length < 2) return intervals
  intervals = intervals.sort(function(a,b) {
    return a[0] - b[0]
  })
  var stack = []
  stack.push(intervals[0])
  var top
  for(var i = 1; i < intervals.length; i++) {
    top = stack[stack.length - 1]

codingwithrachel

function anagram(str) {
  var obj = {}
  function recurse(combo, feed) {
    if(!feed.length) {
      obj[combo] = 1
      return
    } else {
      for(var i=0; i < feed.length; i++) {
        recurse(combo+feed[i], feed.slice(0,i) + feed.slice(i+1))
      }

codingwithrachel

function rps(rounds) {
  var obj = {}
  var feed = ['r','p','s'];

  function recurse(combo, numRoundsLeft) {
    if(!numRoundsLeft) {
      obj[combo] = 1
      return 
    }
    

codingwithrachel

async function sendSignedTransaction(web3, privateKey, nonce, gasPrice, gasLimit, to, from, data) {

    try {
        const rawTx1 = {
          nonce: nonce,
          gasPrice: gasPrice,
          gasLimit: gasLimit,
          to: to,
          from: from,
          data: data