static int slopeOfNum ( String num , int n ) {
  int slope = 0 ;
  for ( int i = 1 ;
  i < n - 1 ;
  i ++ ) {
    if ( num . charAt ( i ) > num . charAt ( i - 1 ) && num . charAt ( i ) > num . charAt ( i + 1 ) ) slope ++ ;
    else if ( num . charAt ( i ) < num . charAt ( i - 1 ) && num . charAt ( i ) < num . charAt ( i + 1 ) ) slope ++ ;
  }
  return slope ;
}

static int slopeOfNum ( String num , int n ) { int slope = 0 ; for ( int i = 1 ; i < n - 1 ; i ++ ) { if ( num . charAt ( i ) > num . charAt ( i - 1 ) && num . charAt ( i ) > num . charAt ( i + 1 ) ) slope ++ ; else if ( num . charAt ( i ) < num . charAt ( i - 1 ) && num . charAt ( i ) < num . charAt ( i + 1 ) ) slope ++ ; } return slope ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (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: (binary_expression left: (identifier) right: (decimal_integer_literal))) 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 (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))))) consequence: (expression_statement (update_expression (identifier))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal))))))) consequence: (expression_statement (update_expression (identifier))))))) (return_statement (identifier))))