/*EXPECTED 0,2,3 0,-1,2,3 */ class _Main { static function main(args : string[]) : void { var input = [0]; input[2] = 2; input[3] = 3; var output = new number[]; input.forEach((n) -> { output.push(n); }); log output.join(","); output.splice(0, output.length); input._forEach((n) -> { output.push(n != null ? n : -1); }); log output.join(","); } }