I solved it in ts using arrays istead of linked lists, bc I didn´t wanted to declare classes.

And also I think the challenge is poorly explained.

function main(il: string[]) { const arr: number[] = il.map(Number); const len = Number(arr.splice(0, 1)[0]);

for (let i = 0; i < len; i++) {
    const res: number[] = [];

    for (let j = 0; j <= 1; j++) {
        const newLen = arr[0];
        arr.splice(0, 1);

        res.push(...arr.splice(0, newLen));
    }

    console.log(res.sort((a, b) => a - b).join(" "));
}

}