Name        : Symmetric matrix validator

Language    : Java
Inputs      : A 2 dimensional array of string (can be any type)
Returns     : Boolean; if symmetric then returns true else false
Description : This algorithm validates if the received 2D matrix 
              fulfil the condition of symmetric matrix. Meaning
              an exact matching of form and arrangement of parts 
              on opposite sides of a boundary. If the matrix is 
              horizontally or vertically symmetric, the method
              returns true.
              Example of two symmetric matrix:
                
                1 2 3
                1 2 3
                1 2 3
                
                - - - - - - -
                - - - x - - -
                - - x - x - -
                - x - - - x -
                - - x - x - -
                - - - x - - -
                - - - - - - -