eday69

// Given the array arr, iterate through and remove each element 
// starting from the first element (the 0 index) until the function 
// func returns true when the iterated element is passed through it.

// Then return the rest of the array once the condition is satisfied, 
// otherwise, arr should be returned as an empty array.

// Cannot use filter, since we need to return the rest of the array
// once the condition is met. We use a 'For' loop !

eday69

// Find the missing letter in the passed letter range and return it.
// If all letters are present in the range, return undefined.

function fearNotLetter(str) {
  let lastLetter=str.charCodeAt(0);
  let missingLetter;
  for (let i=1; i<str.length; i++) {
    let currentLetter=str.charCodeAt(i);
    console.log(lastLetter, currentLetter);
    if ((lastLetter+1) < currentLetter) {

eday69

// Convert a string to spinal case. Spinal case is all-lowercase-words-joined-by-dashes.

function spinalCase(str) {
  // "It's such a fine line between stupid, and clever."
  // --David St. Hubbins
  return str.split(/\s|_|(?=[A-Z])/).join("-").toLowerCase();
}

spinalCase('This Is Spinal Tap');

eday69

// Fill in the object constructor with the following methods below:

// getFirstName() getLastName() getFullName() setFirstName(first) 
// setLastName(last) setFullName(firstAndLast)
// Run the tests to see the expected output for each method.

// The methods that take an argument must accept only one argument 
// and it has to be a string.

// These methods must be the only available means of interacting with 

eday69

// Design a cash register drawer function checkCashRegister()
// that accepts purchase price as the first argument (price),
// payment as the second argument (cash), and cash-in-drawer
// (cid) as the third argument.

// cid is a 2D array listing available currency.

// The checkCashRegister() function should always return an object
// with a status key and a change key.

eday69

// Return true if the passed string looks like a valid US
// phone number.

// The user may fill out the form field any way they choose
// as long as it has the format of a valid US number. The
// following are examples of valid formats for US numbers
// (refer to the tests below for other variants):

// 555-555-5555 (555)555-5555 (555) 555-5555 555 555 5555
// 5555555555 1 555 555 5555

eday69

// One of the simplest and most widely known ciphers is a Caesar cipher,
// also known as a shift cipher. In a shift cipher the meanings of the
// letters are shifted by some set amount.

// A common modern use is the ROT13 cipher, where the values of the
// letters are shifted by 13 places. Thus 'A' ↔ 'N', 'B' ↔ 'O' and so on.

// Write a function which takes a ROT13 encoded string as input and
// returns a decoded string.

eday69

// Convert the given number into a roman numeral.
// All roman numerals answers should be provided in upper-case.

function convertToRoman(num) {
  let thousands = ["", "M", "MM", "MMM"];
  let hundreds = ["", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"];
  let dozens = ["", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"];
  let singles = ["", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"];

  return thousands[Math.floor(num / 1000)]+

eday69

// Return true if the given string is a palindrome. Otherwise, 
// return false.
// A palindrome is a word or sentence that's spelled the same 
// way both forward and backward, ignoring punctuation, case,
// and spacing.

// Note
// You'll need to remove all non-alphanumeric characters (punctuation, 
// spaces and symbols) and turn everything into the same case 
// (lower or upper case) in order to check for palindromes.

eday69

// Return a new array that transforms the elements' average 
// altitude into their orbital periods (in seconds).
// The array will contain objects in the format {name: 'name', 
// avgAlt: avgAlt}.
// You can read about orbital periods on Wikipedia.
// The values should be rounded to the nearest whole number.
// The body being orbited is Earth.
// The radius of the earth is 6367.4447 kilometers, and the GM 
// value of earth is 398600.4418 km3s-2.