static boolean isPrime ( int a [ ] , int lower , int upper ) {
  int n = 0 ;
  for ( int i = lower - 1 ;
  i <= upper - 1 ;
  i ++ ) n += a [ i ] ;
  if ( n <= 1 ) return false ;
  for ( int i = 2 ;
  i < n ;
  i ++ ) if ( n % i == 0 ) return false ;
  return true ;
}

static boolean isPrime ( int a [ ] , int lower , int upper ) { int n = 0 ; for ( int i = lower - 1 ; i <= upper - 1 ; i ++ ) n += a [ i ] ; if ( n <= 1 ) return false ; for ( int i = 2 ; i < n ; i ++ ) if ( n % i == 0 ) return false ; return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) 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: (binary_expression left: (identifier) right: (decimal_integer_literal)))) condition: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (array_access array: (identifier) index: (identifier))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (false))) (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: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (decimal_integer_literal))) consequence: (return_statement (false)))) (return_statement (true))))