static boolean checkHalfFrequency ( String str ) {
  int L = str . length ( ) ;
  int fre [ ] = new int [ MAXN ] ;
  for ( int i = 0 ;
  i < L ;
  i ++ ) {
    fre [ str . charAt ( i ) ] ++ ;
  }
  for ( int i = 0 ;
  i < MAXN ;
  i ++ ) {
    if ( fre [ i ] > L / 2 ) {
      return true ;
    }
  }
  return false ;
}

static boolean checkHalfFrequency ( String str ) { int L = str . length ( ) ; int fre [ ] = new int [ MAXN ] ; for ( int i = 0 ; i < L ; i ++ ) { fre [ str . charAt ( i ) ] ++ ; } for ( int i = 0 ; i < MAXN ; i ++ ) { if ( fre [ i ] > L / 2 ) { return true ; } } return false ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) dimensions: (dimensions) value: (array_creation_expression type: (integral_type) dimensions: (dimensions_expr (identifier))))) (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 (expression_statement (update_expression (array_access array: (identifier) index: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier)))))))) (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: (array_access array: (identifier) index: (identifier)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (return_statement (true)))))) (return_statement (false))))