public class Main {
public static void main(String[] args) {
Integer[] intArr ={new Integer(20), new Integer(30), new Integer(10), new
Integer(80), new Integer(70), new Integer(100)};
String[] strArr ={ "red", "blue", "green", "black", "brown", "yellow"};
MyArray<Integer> myInt = new MyArray<Integer>(intArr);
MyArray<String> myStr = new MyArray(strArr);
System.out.println("Integer array:");
for(int i=0;i<intArr.length;i++)
{
System.out.print(intArr[i]+" ");
}
System.out.println("\nMax:"+ myInt.max());
myInt.shuffle();
System.out.println("Shuffling...\n"+myInt.toString());
myInt.shuffle();
System.out.println("Shuffling again...\n"+myInt.toString());
myInt.shuffle();
System.out.println("Shuffling one more time...\n"+myInt.toString());
System.out.println("String array:");
for(int i=0;i<strArr.length;i++)
{
System.out.print(strArr[i]+" ");
}
System.out.println("\nMax:"+ myStr.max());
myStr.shuffle();
System.out.println("Shuffling...\n"+ myStr.toString());
myStr.shuffle();
System.out.println("Shuffling again...\n"+ myStr.toString());
myStr.shuffle();
System.out.println("Shuffling one more time...\n"+ myStr.toString());
}
}
import java.util.Arrays;
import java.util.Random;
public class MyArray <T extends Comparable<? super T>>
{
T[] arr;
public MyArray(T[] a)
{
arr = Arrays.copyOf(a, a.length);
}
public T max()
{
T maximum = arr[0];
for(int i=1;i<arr.length;i++)
{
if(arr[i].compareTo(maximum)>0)
maximum=arr[i];
}
return maximum;
}
public void shuffle()
{
int i;
T temp;
Random rgen = new Random();
for( i=arr.length-1;i>1;i--)
{
int randomPosition = rgen.nextInt(i);
temp = arr[randomPosition];
arr[randomPosition] = arr[i];
arr[i]=temp;
}
}
public String toString()
{
String temp = "";
for (int i = arr.length-1; i>=0; i--){
temp = temp + " " + arr[i] + " ";
}
return temp;
}
}
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