static int mostFrequent ( int arr [ ] , int n ) {
  Map < Integer , Integer > hp = new HashMap < Integer , Integer > ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    int key = arr [ i ] ;
    if ( hp . containsKey ( key ) ) {
      int freq = hp . get ( key ) ;
      freq ++ ;
      hp . put ( key , freq ) ;
    }
    else {
      hp . put ( key , 1 ) ;
    }
  }
  int max_count = 0 , res = - 1 ;
  for ( Entry < Integer , Integer > val : hp . entrySet ( ) ) {
    if ( max_count < val . getValue ( ) ) {
      res = val . getKey ( ) ;
      max_count = val . getValue ( ) ;
    }
  }
  return res ;
}

static int mostFrequent ( int arr [ ] , int n ) { Map < Integer , Integer > hp = new HashMap < Integer , Integer > ( ) ; for ( int i = 0 ; i < n ; i ++ ) { int key = arr [ i ] ; if ( hp . containsKey ( key ) ) { int freq = hp . get ( key ) ; freq ++ ; hp . put ( key , freq ) ; } else { hp . put ( key , 1 ) ; } } int max_count = 0 , res = - 1 ; for ( Entry < Integer , Integer > val : hp . entrySet ( ) ) { if ( max_count < val . getValue ( ) ) { res = val . getKey ( ) ; max_count = val . getValue ( ) ; } } return res ; }
(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 (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: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (identifier) index: (identifier)))) (if_statement condition: (parenthesized_expression (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))) consequence: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))))) (expression_statement (update_expression (identifier))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (identifier))))) alternative: (block (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (decimal_integer_literal)))))))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (unary_expression operand: (decimal_integer_literal)))) (enhanced_for_statement type: (generic_type (type_identifier) (type_arguments (type_identifier) (type_identifier))) name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) consequence: (block (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (expression_statement (assignment_expression left: (identifier) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))) (return_statement (identifier))))