static int no_of_ways ( String s ) {
  int n = s . length ( ) ;
  int count_left = 0 , count_right = 0 ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) {
    if ( s . charAt ( i ) == s . charAt ( 0 ) ) {
      ++ count_left ;
    }
    else break ;
  }
  for ( int i = n - 1 ;
  i >= 0 ;
  -- i ) {
    if ( s . charAt ( i ) == s . charAt ( n - 1 ) ) {
      ++ count_right ;
    }
    else break ;
  }
  if ( s . charAt ( 0 ) == s . charAt ( n - 1 ) ) return ( ( count_left + 1 ) * ( count_right + 1 ) ) ;
  else return ( count_left + count_right + 1 ) ;
}

static int no_of_ways ( String s ) { int n = s . length ( ) ; int count_left = 0 , count_right = 0 ; for ( int i = 0 ; i < n ; ++ i ) { if ( s . charAt ( i ) == s . charAt ( 0 ) ) { ++ count_left ; } else break ; } for ( int i = n - 1 ; i >= 0 ; -- i ) { if ( s . charAt ( i ) == s . charAt ( n - 1 ) ) { ++ count_right ; } else break ; } if ( s . charAt ( 0 ) == s . charAt ( n - 1 ) ) return ( ( count_left + 1 ) * ( count_right + 1 ) ) ; else return ( count_left + count_right + 1 ) ; }
(method_declaration (modifiers) type: (integral_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) value: (decimal_integer_literal)) 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: (identifier)) 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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))))) consequence: (block (expression_statement (update_expression (identifier)))) alternative: (break_statement)))) (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: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) consequence: (block (expression_statement (update_expression (identifier)))) alternative: (break_statement)))) (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (decimal_integer_literal))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) consequence: (return_statement (parenthesized_expression (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) alternative: (return_statement (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal)))))))