static boolean isFrequencyEqual ( int arr [ ] , int len ) {
  if ( len % 2 == 1 ) {
    System . out . print ( "No Such Element" ) ;
    return false ;
  }
  HashMap < Integer , Integer > freq = new HashMap < Integer , Integer > ( ) ;
  for ( int i = 0 ;
  i < len ;
  i ++ ) if ( freq . containsKey ( arr [ i ] ) ) {
    freq . put ( arr [ i ] , freq . get ( arr [ i ] ) + 1 ) ;
  }
  else {
    freq . put ( arr [ i ] , 1 ) ;
  }
  for ( int i = 0 ;
  i < len ;
  i ++ ) {
    if ( freq . containsKey ( arr [ i ] ) && freq . get ( arr [ i ] ) == len / 2 ) {
      System . out . print ( arr [ i ] + "\n" ) ;
      return true ;
    }
  }
  System . out . print ( "No such element" ) ;
  return false ;
}

static boolean isFrequencyEqual ( int arr [ ] , int len ) { if ( len % 2 == 1 ) { System . out . print ( " No ▁ Such ▁ Element " ) ; return false ; } HashMap < Integer , Integer > freq = new HashMap < Integer , Integer > ( ) ; for ( int i = 0 ; i < len ; i ++ ) if ( freq . containsKey ( arr [ i ] ) ) { freq . put ( arr [ i ] , freq . get ( arr [ i ] ) + 1 ) ; } else { freq . put ( arr [ i ] , 1 ) ; } for ( int i = 0 ; i < len ; i ++ ) { if ( freq . containsKey ( arr [ i ] ) && freq . get ( arr [ i ] ) == len / 2 ) { System . out . print ( arr [ i ] + " \n " ) ; return true ; } } System . out . print ( " No ▁ such ▁ element " ) ; return false ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (return_statement (false)))) (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 (type_identifier) (type_identifier))) 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: (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier))))) consequence: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (decimal_integer_literal)))))) alternative: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)) (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 (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (array_access array: (identifier) index: (identifier)))) right: (binary_expression left: (identifier) right: (decimal_integer_literal))))) consequence: (block (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (string_literal))))) (return_statement (true)))))) (expression_statement (method_invocation object: (field_access object: (identifier) field: (identifier)) name: (identifier) arguments: (argument_list (string_literal)))) (return_statement (false))))