import java.util.Arrays;

import java.util.Random;

public class Ex1 {

public static void main(String[] args) {

double[] values = {1.0, 2.0, 3.0, 4.0, 5.0};

System.out.print("Original array: ");

System.out.println(Arrays.toString(values));

powArray(values, 2);

int[] scores = createScoresArray(100);

histogram(scores);

}

public static void powArray(double[] array, int power) {

double[] newArray = Arrays.copyOf(array, array.length);

for (int i = 1; i < array.length; i++) {

newArray[i] = Math.pow(array[i], power);

}

System.out.print("Original array to the power of " + power + ": ");

System.out.println(Arrays.toString(newArray));

}

public static int[] createScoresArray(int size) {

Random randomScore = new Random();

int[] randomArray = new int[size];

for (int i = 0; i < randomArray.length; i++) {

randomArray[i] = randomScore.nextInt(100);

}

System.out.print(size + " random scores: ");

System.out.println(Arrays.toString(randomArray));

return randomArray;

}

public static void histogram(int[] scores) {

System.out.print("Distribution of scores: ");

int[] scoreDistribution = new int[scores.length];

for (int score : scores) {

scoreDistribution[score]++;

}

System.out.println(Arrays.toString(scoreDistribution));

}

}