object Session { def pascal(c: Int, r: Int): Int = { if (c < 0 || r < 0 || c > r) { 0 } else if (c == r) { 1 } else { pascal(c - 1, r - 1) + pascal(c, r - 1) } }
pascal(1, 3)
/** * Exercise 2 */ def balance(chars: List[Char]): Boolean = { @tailrec def loop(chars: List[Char], acc: Int): Int = { if (chars.isEmpty) return acc if (chars.head == '(') { loop(chars.tail, acc + 1) } else if (chars.head == ')') { if (acc > 0) loop(chars.tail, acc - 1) else -1 } else loop(chars.tail, acc) }
loop(chars, 0) == 0
}
val list: List[Char] = (")()()()()()()()".toCharArray).toList
balance(list)
def countChange(money: Int, coins: List[Int]): Int = { //money coins denominations val currentCoinDenomination = coins.head; var index:Int = 1; while(currentCoinDenomination*index <= money) {
}
0
} }