public static void main ( String [ ] args ) {
  int n = 4 ;
  int a [ ] [ ] = {
    {
      1 , 2 , 3 , 4 }, {
        5 , 6 , 7 , 8 }, {
          1 , 2 , 3 , 4 }, {
            5 , 6 , 7 , 8 }
          };
          printPrincipalDiagonal ( a , n ) ;
          printSecondaryDiagonal ( a , n ) ;
        }
        
public static void main ( String [ ] args ) { int n = 4 ; int a [ ] [ ] = { { 1 , 2 , 3 , 4 } , { 5 , 6 , 7 , 8 } , { 1 , 2 , 3 , 4 } , { 5 , 6 , 7 , 8 } } ; printPrincipalDiagonal ( a , n ) ; printSecondaryDiagonal ( a , n ) ; }
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