package math; import org.apache.commons.math3.stat.ranking.*; class pro{ public static void main(String[] args) { pro test=new pro(); } pro(){ NaturalRanking ranking = new NaturalRanking(NaNStrategy.MINIMAL,TiesStrategy.MAXIMUM); double[] data = { 1, 2, 3, 4, 5, 6}; double[] ranks = ranking.rank(data); System.out.println(ranks[5]); } }