static int getPairs ( int a [ ] ) {
  int n = a . length ;
  int count = ( n * ( n - 1 ) ) / 2 ;
  return count ;
}

static int getPairs ( int a [ ] ) { int n = a . length ; int count = ( n * ( n - 1 ) ) / 2 ; return count ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))))) right: (decimal_integer_literal)))) (return_statement (identifier))))