CodeLab120-PASCAL1.swift

// edge -> nil, string, max, min
// 1. create array and init as [1]
// 2. create smallArray with adding array[n] and array[n+1]
// 2. add smallArray into bigArray
// 3. add 1 in the last

func pascal(num: Int) -> [[Int]] {
  var sumArray = [[Int]]()
  var pascalArray = [Int]()
  sumArray.append([1])
  for a in 0..<num-1 {
    pascalArray.append(1)
    for b in 0..<sumArray[a].count-1 {
      pascalArray.append(sumArray[a][b] + sumArray[a][b+1])
    }
    pascalArray.append(1)
    sumArray.append(pascalArray)
    pascalArray = [Int]()
  }
  return sumArray
}

print(pascal(num: 5))
print(pascal(num: 10))