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function arrayRankTransform(arr: number[]): number[] {    const clone = Array.from(arr);    clone.sort((a, b) => a - b);
    let idx = 0;    const map = new Map<number, number>();    for (const i of clone) {        if (!map.has(i)) map.set(i, ++idx);    }    const ans = Array.from(arr).map((_, i) => map.get(arr[i]) ?? 0);
    return ans;}export default arrayRankTransform;