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import sampleCorrelation from "./sample_correlation";
/** * The [rank correlation](https://en.wikipedia.org/wiki/Rank_correlation) is * a measure of the strength of monotonic relationship between two arrays * * @param {Array<number>} x first input * @param {Array<number>} y second input * @returns {number} sample rank correlation */function sampleRankCorrelation(x, y) {    const xIndexes = x        .map((value, index) => [value, index])        .sort((a, b) => a[0] - b[0])        .map((pair) => pair[1]);    const yIndexes = y        .map((value, index) => [value, index])        .sort((a, b) => a[0] - b[0])        .map((pair) => pair[1]);
    // At this step, we have an array of indexes    // that map from sorted numbers to their original indexes. We reverse    // that so that it is an array of the sorted destination index.    const xRanks = Array(xIndexes.length);    const yRanks = Array(xIndexes.length);    for (let i = 0; i < xIndexes.length; i++) {        xRanks[xIndexes[i]] = i;        yRanks[yIndexes[i]] = i;    }
    return sampleCorrelation(xRanks, yRanks);}
export default sampleRankCorrelation;