Methods Detail

• public int[] column(int col)

  Select a column from a 2D array.

  int[][] nums = [[1, 2], [10, 20]]
  assert nums.column(0) == [1, 10] as int[]
  assert nums.column(1) == [2, 20] as int[]
  

  Parameters:

  Returns:

  an int[]

• public int[][] eachColumn(Closure closure)

  Process the columns of the array.

  double[][] nums = [[1, 2], [10, 20]]
  nums.eachColumn {
      assert it[0] * 10 == it[1]
  }
  

  Parameters:

  closure - the closure applied on each array column

  Returns:

  the self array

• public List flatten()

  Flattens a 2D array into a new collection. The items are copied row by row.

  Example usage:

  int[][] array = [[0, 1], [2, 3]]
  assert array.flatten() == [0, 1, 2, 3]
  

  Returns:

  a Collection of the array elements

  Since:

  5.0.0

• public int[][] transpose()

  A transpose method for 2D int arrays.

  Example usage:

  int[][] nums = [[10, 15, 20], [30, 35, 40]]
  int[][] expected = [[10, 30], [15, 35], [20, 40]]
  assert nums.transpose() == expected
  

  Returns:

  the transposed 2D int array

  Since:

  3.0.8

• public Iterator transposing()

  An iterator of the columns of the array.

  int[][] nums = [[1, 2], [10, 20]]
  assert nums.transpose() == nums.transposing().toList()
  assert nums.transposing().collect{ int[] col -> col.sum() } == [11, 22]
  

  Returns:

  the iterator