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def shuffle(array)
  counter = array.length - 1

  while counter > 0
    # item selected from the unshuffled part of array
    random_index = rand(counter)

    # swap the items at those locations
    array[counter], array[random_index] = array[random_index], array[counter]

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1. Make sure git is tracking your project locally

Do you need a refresher on git? Go through Codecademy's git course.

1. Using your terminal/command line, get inside the folder where your project files are kept: cd /path/to/my/codebase. → You cannot do this simply by opening the folder normally, you must do this with the command line/terminal.
   → Do you need a refresher on using your command line/terminal? I've compiled my favorite resources here.

2. Check if git is already initialized: git status

mindplace

My 101 for learning any language

The following lists will be implemented in any new language that I'd like learn. I'll apply TDD for everyone of these examples.

Easy

The following list:

• Calculator
• Sorting and Search algorithms
  • Bubble sort
  • Quick sort
• Merge sort

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Input/Output

Goals

• Know how to use gets to read input.
• Know why chomp is often used to clean input.
• Know the difference between print and puts.
• Know how to open a file
  • Know how to read a line from a file.
  • Know how to read in all the lines from a file.

mindplace

class Array
  def my_map(&prc)
    new = []
    self.my_each{|item| new << prc.call(item)}
    new
  end

  def my_select(&prc)
    selected = []
    self.my_each{|item| selected << item if prc.call(item)}

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class Array
  def my_each(&prc)
    i = 0
    while i < self.count
      prc.call(self[i])
      i += 1
    end
    self
  end
end

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function newList() {
  var listString = prompt("Welcome to GroceryListMaker!\n\n" + 
        "Enter items with quantities like so:\n"
        + "2 apples, 1 tomato, 3 pomegranates, 1 sugar");
  var list = {};

  listString = listString.split(", ");
  for (var i=0; i < listString.length; i++) {
    var quant = listString[i].split(" ")[0];
    var item = listString[i].split(" ")[1];

mindplace

function toBinaryNumber(number) {
  var returning = new Array;
  if (number % 2 != 0) {
    returning[0] = 1;
    number -= 1;
  }

  while (number > 0) {
    i = 1;
    while (Math.pow(2, i) <= number) {

mindplace

def to_binary(number)
  returning = []

  if number.odd?
    returning << 1
    number -= 1
  end

  while number > 0
    i = 1

mindplace

function BinaryConverter(binNum) {
  var numArray = binNum.toString().split("").reverse();
  var number = 0;
  for (var i=0; i < numArray.length; i++) {
    var num = parseInt(numArray[i]);
    var location = Math.pow(2, i);
    number += num * location;
  }
  return number;
}