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export default function constructArray(n: number, k: number): number[] {    const answer: number[] = new Array(n).fill(0);    let idx = 0;    for (let i = 1; i < n - k; ++i) {        answer[idx] = i;        ++idx;    }    for (let i = n - k, j = n; i <= j; ++i, --j) {        answer[idx] = i;        ++idx;        if (i !== j) {            answer[idx] = j;            ++idx;        }    }    return answer;}