1. Define a static method doubleSquareArray that accepts a square two-dimensional array of integers as an argument and returns a square two-dimensional array that has twice the number of rows and...

1. Define a static method doubleSquareArray that accepts a square two-dimensional array of integers as an argument and returns a square two-dimensional array that has twice the number of rows and columns as the argument array and contains the same integers.

2. Given a two-dimensional array of strings, define a static method that returns the number of times a given string appears in the array.