Friday September 1st

Long Weekend

  • So we have a long weekend ahead. For many, it means a destination to Catalina Island, travelling some place or the other like SF or to visit friends and family.

  • For me, it’s about trying to get some work done.

Almost there with implementation

  • I’m taking a one-file-version of Tic-Tac-Toe in C++, and implementing it in OOP.

  • I’m almost there, except for a few bugs! I just did the bulk of this work today, and it’s not really due until the 26th, so..good start!


  • It accepts input only on the second time the board is drawn

  • It’s only ending the game when it wins..not when board is full…. (I may not actually have written that function!)

  • It tells you that the player has won, but doesn’t ask you if you want to quit or play again :(

Other stuff I hope to accomplish this weekend…

  • The bulk of my work will be in Python for my nanodegree final project, as I don’t really have a good solution for VS at home at the moment, unfortunately. So my VS time is limited.

So the flood…

  • JPL asked us to send a card to our cohorts (from our workshop) who are at JSC (Johnson Space Centre). They’re flooding! :( We have to include a note, and the year in which we did the workshop (in my case, it was Jan-April 2016. I hope to intern next year, too!


  • That’s about it for me. If I have time, I mayyy do some Mathematica, too.
  • Also, read up on some Graph Theory or learn Emacs. But highly unlikely.
  • Mostly just focusing on Python and finishing up my Nanodegree project, and brushing back up on C++ for me, so the rest of the semester won’t kill me.

I heard about this really neat class I’d like to take…

  • It’s called ‘Discrete Structures’, and it’s offered at my school. It’s like Logic and Linear Algebra, but with programming. I’d love to take it, particularly if it is in C++. We’ll see.

I also got some neat slides…

  • My mentor is teaching me PLT, and has taught compiler classes. He basically gave me two stacks of slides in C++, which he obtained when he took a workshop years ago in, of all places, Detroit.

Things I learned about


  • Return the index of the odd number in an array or -1 otherwise
function oddOne(arr) {
    var ans = -1
    for (var i = 0; i < arr.length; i++){
      if (arr[i] % 2 !== 0){
        ans = arr.indexOf(arr[i])
  • build a square with plus-es

eg 3 should be

  • solution
// nested for-loop
function generateShape(int){
  g = []
  for (var i = 0; i < int; i++)
    for (var j = 0; j < 1; j++){
  g = g.join("\n")
  return g
  • return opposite of array eg. [1,2,3,4] -> [-1,-2,-3,-4]
function oppositeArray(numbers) {
  var arr = []
  for (var i = 0; i < numbers.length; i++){
    arr.push(0 - numbers[i])
  return arr
  • obtain the next perfect square (n * n). If the number is less than 0, return 0
def next_perfect_square(n):
    import math
    if n == 0:
      return 1 
    elif n < 0:
      return 0
      a = int(math.sqrt(n)) + 1
      b = pow(a, 2)
      return b
Written on September 1, 2017