public static void main ( String [ ] args ) {
  int matrix [ ] [ ] = {
    {
      12 , 23 , 34 }, {
        45 , 56 , 67 }, {
          78 , 89 , 91 }
        };
        int k = 2 ;
        rotateMatrix ( matrix , k ) ;
        displayMatrix ( matrix ) ;
      }
      
public static void main ( String [ ] args ) { int matrix [ ] [ ] = { { 12 , 23 , 34 } , { 45 , 56 , 67 } , { 78 , 89 , 91 } } ; int k = 2 ; rotateMatrix ( matrix , k ) ; displayMatrix ( matrix ) ; }
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