railsstudent

# sorry i cheat. Copy the idea from http://www.geeksforgeeks.org/merging-intervals/
sumIntervals = (intervals) ->
  # sort intervals by starting time in ascending order
  sortedIntervals = intervals.sort((a, b) ->
                         return a[0] - b[0]
                    )
  stack = [sortedIntervals[0]]
  for i in [1...sortedIntervals.length]
    stackTop = stack[stack.length - 1]
    if sortedIntervals[i][0] > stackTop[1] then stack.push sortedIntervals[i]

railsstudent

solution = (str) ->
  newStr = str
  if str.length % 2 is 1 then newStr += '_'
  result = []
  for i in [0...newStr.length] by 2
    result.push (newStr[i..i+1])
  result

railsstudent

validBraces = (braces) ->
  bracesMap = {
    ']': '[',
    ')': '(',
    '}': '{'
  }
    
  stack = [];
  for i in [0...braces.length]
    if braces[i] in ['(', '{', '['] then stack.push braces[i]  

railsstudent

add = (a, b) ->  
  strA = "#{a}"
  strB = "#{b}"
  lenA = strA.length
  lenB = strB.length
  # if length is different, prepend the shorter one with 0
  if lenA < lenB
    strA = '0' + strA for i in [0...(lenB - lenA)]
  else   
    strB = '0' + strB for i in [0...(lenA - lenB)]

railsstudent

pushAtom = (stack, atom, index) ->
    # push previous element if exists
    a = {}
    a[atom] = Number(index) if atom isnt '' and index isnt ''
    a[atom] = 1 if atom isnt '' and index is ''
    stack.push (a) if a[atom]

pushMoleculeBtwBrackets = (stack, openBracket, closeBracket, index) ->
  moculeStack = []
  for i in [stack.length - 2..0] by -1

railsstudent

Keybase proof

I hereby claim:

• I am railsstudent on github.
• I am connieleung (https://keybase.io/connieleung) on keybase.
• I have a public key whose fingerprint is 4214 A3D9 A934 58FA 5082 4639 4876 31BE 0EB1 A0D1

To claim this, I am signing this object:

railsstudent

	@Override
	protected void actionOnTouch(float x, float y) {
		//Increase/decrease the speed of the ball making the ball move towards the touch
		mBallX = x;
		mBallY = y;
//		mBallSpeedX = x - mBallX;
//		mBallSpeedY = y - mBallY;
		mBallSpeedX = (x - mBallX) * 2;
		mBallSpeedY = (y - mBallY) * 2;
	}

railsstudent

	@Override
	protected void actionOnTouch(float x, float y) {
		//Increase/decrease the speed of the ball making the ball move towards the touch
		mBallX = x;
		mBallY = y;
		mBallSpeedX *= 2;
		mBallSpeedY *= 2;
//		mBallSpeedX = x - mBallX;
//		mBallSpeedY = y - mBallY;
	}