static long nc2 ( long input ) {
  long output = 1 ;
  output = input * ( input - 1 ) / 2 ;
  return output ;
}

static long nc2 ( long input ) { long output = 1 ; output = input * ( input - 1 ) / 2 ; return output ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (decimal_integer_literal)))) (return_statement (identifier))))