static int maxdiff ( int arr [ ] , int n ) {
  Map < Integer , Integer > freq = new HashMap < > ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) freq . put ( arr [ i ] , freq . get ( arr [ i ] ) == null ? 1 : freq . get ( arr [ i ] ) + 1 ) ;
  int ans = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    for ( int j = 0 ;
    j < n ;
    j ++ ) {
      if ( freq . get ( arr [ i ] ) > freq . get ( arr [ j ] ) && arr [ i ] > arr [ j ] ) ans = Math . max ( ans , freq . get ( arr [ i ] ) - freq . get ( arr [ j ] ) ) ;
      else if ( freq . get ( arr [ i ] ) < freq . get ( arr [ j ] ) && arr [ i ] < arr [ j ] ) ans = Math . max ( ans , freq . get ( arr [ j ] ) - freq . get ( arr [ i ] ) ) ;
    }
  }
  return ans ;
}

static int maxdiff ( int arr [ ] , int n ) { Map < Integer , Integer > freq = new HashMap < > ( ) ; for ( int i = 0 ; i < n ; i ++ ) freq . put ( arr [ i ] , freq . get ( arr [ i ] ) == null ? 1 : freq . get ( arr [ i ] ) + 1 ) ; int ans = 0 ; for ( int i = 0 ; i < n ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { if ( freq . get ( arr [ i ] ) > freq . get ( arr [ j ] ) && arr [ i ] > arr [ j ] ) ans = Math . max ( ans , freq . get ( arr [ i ] ) - freq . get ( arr [ j ] ) ) ; else if ( freq . get ( arr [ i ] ) < freq . get ( arr [ j ] ) && arr [ i ] < arr [ j ] ) ans = Math . max ( ans , freq . get ( arr [ j ] ) - freq . get ( arr [ i ] ) ) ; } } return ans ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (generic_type (type_identifier) (type_arguments (type_identifier) (type_identifier))) declarator: (variable_declarator name: (identifier) value: (object_creation_expression type: (generic_type (type_identifier) (type_arguments)) arguments: (argument_list)))) (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: (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (ternary_expression condition: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (null_literal)) consequence: (decimal_integer_literal) alternative: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (decimal_integer_literal))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (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 (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 (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))))))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))) right: (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier))))) consequence: (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))))))))))))) (return_statement (identifier))))