static int numofstring ( int n , int m ) {
  if ( n == 1 ) return m ;
  if ( n == 2 ) return m * ( m - 1 ) ;
  return m * ( m - 1 ) * ( int ) Math . pow ( m - 2 , n - 2 ) ;
}

static int numofstring ( int n , int m ) { if ( n == 1 ) return m ; if ( n == 2 ) return m * ( m - 1 ) ; return m * ( m - 1 ) * ( int ) Math . pow ( m - 2 , n - 2 ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (identifier))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (return_statement (binary_expression left: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (cast_expression type: (integral_type) value: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)) (binary_expression left: (identifier) right: (decimal_integer_literal)))))))))