Question

How to calculate and print the Pascal triangle in Scala

Answer 1

object PrintPascalTriangle_Scala {
  def main(args: Array[String]): Unit = {
    val n = 5

    for (i <- 0 until n) {
      var number = 1

      for (_ <- 0 until (n - i) * 2) {
        print(" ")
      }

      for (j <- 0 to i) {
        print(f"$number%4d")
        number = number * (i - j) / (j + 1)
      }
      println()
    }
  }
}



/*
run:

             1
           1   1
         1   2   1
       1   3   3   1
     1   4   6   4   1

*/

 

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