static void swapDiagonal ( int matrix [ ] [ ] ) {
  for ( int i = 0 ;
  i < N ;
  i ++ ) {
    int temp = matrix [ i ] [ i ] ;
    matrix [ i ] [ i ] = matrix [ i ] [ N - i - 1 ] ;
    matrix [ i ] [ N - i - 1 ] = temp ;
  }
}

static void swapDiagonal ( int matrix [ ] [ ] ) { for ( int i = 0 ; i < N ; i ++ ) { int temp = matrix [ i ] [ i ] ; matrix [ i ] [ i ] = matrix [ i ] [ N - i - 1 ] ; matrix [ i ] [ N - i - 1 ] = temp ; } }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions))) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (identifier)) right: (array_access array: (array_access array: (identifier) index: (identifier)) index: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))))) (expression_statement (assignment_expression left: (array_access array: (array_access array: (identifier) index: (identifier)) index: (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) right: (identifier)))))))