CyclicRotation

import java.util.Arrays;

import java.util.stream.Collectors;

public class CyclicRotation {

     public static void main(String[] args) {

          print(solution(3, 1, 2, 3, 4, 5));

     }

     public static int[] solution(int k, int... a) {

          int l = a.length;

          int[] r = new int[l];

          for (int i = 0; i < l; i++) {

               r[(i + k) % l] = a[i];

          }

          return r;

     }

     public static void print(int... a) {

          System.out.println("[" + Arrays.stream(a).boxed().map(x -> x.toString()).collect(Collectors.joining(",")) + "]");

     }

}

Calculate Statistics

This task will process a sequence of integer numbers
to determine the following statistics:

    o) minimum value
    o) maximum value
    o) number of elements in the sequence
    o) average value

For example: [6, 9, 15, -2, 92, 11]

    o) minimum value = -2
    o) maximum value = 92
    o) number of elements in the sequence = 6
    o) average value = 21.833333

import java.util.Arrays;

import java.util.IntSummaryStatistics;

public class CalculateStatistics {

    

     public static void main(String[] args) {

          double[] stats = solution(6, 9, 15, -2, 92, 11);

          System.out.println(String.format("Minimum=%f, Maximum=%f, Count=%f, Average=%f", stats[0], stats[1], stats[2], stats[3]));

     }

    

     public static double[] solution(int...numbers){

          double[] stats = new double[4];

          IntSummaryStatistics summaryStatistics = Arrays.stream(numbers).summaryStatistics();

          stats[0] = summaryStatistics.getMin();

          stats[1] = summaryStatistics.getMax();

          stats[2] = summaryStatistics.getCount();

          stats[3] = summaryStatistics.getAverage();

          return stats;

     }

}