static boolean checking ( String s ) {
  int c = 0 ;
  int n = s . length ( ) ;
  for ( int i = n - 1 ;
  i >= 0 ;
  i -- ) {
    if ( s . charAt ( i ) == '0' ) c ++ ;
    if ( c >= 6 && s . charAt ( i ) == '1' ) return true ;
  }
  return false ;
}

static boolean checking ( String s ) { int c = 0 ; int n = s . length ( ) ; for ( int i = n - 1 ; i >= 0 ; i -- ) { if ( s . charAt ( i ) == '0' ) c ++ ; if ( c >= 6 && s . charAt ( i ) == '1' ) 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: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal))) consequence: (expression_statement (update_expression (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (character_literal)))) consequence: (return_statement (true))))) (return_statement (false))))