How to sort elements in Double Array using Index in Java?

Declaration :

public static void sort(double[] a, int fromIndex, int toIndex)

1	public static void sort(double[] a, int fromIndex, int toIndex)

Explanation :

Purpose	The java.util.Arrays.sort(double[] a int fromIndex int toIndex) method sorts the specified range of the specified array of doubles into ascending numerical order. The range to be sorted extends from index fromIndex inclusive to index toIndex exclusive.
Parameters	a ===> This is the array to be sorted.
	fromIndex ===> This is the index of the first element (inclusive) to be sorted.
	toIndex ===> This is the index of the last element (exclusive) to be sorted .
Return Value	This method does not return any value.
Exception	IllegalArgumentException — if fromIndex > toIndex ,ArrayIndexOutOfBoundsException — if fromIndex < 0 or toIndex > a.length

Java Program : Example

Below example will explain java.util.Arrays.sort() method.

package com.c4learn;
import java.util.Arrays;
public class ArrayDemo {
	public static void main(String[] args) {
		// Initialize unsorted double array
		double arrD[] = { 3.1, 1.1, 4.1, 2.1, 5.1 };
		// Print the Unsorted Array List
		System.out.println("The Unsorted Double Array is:");
		for (double num : arrD) {
			System.out.println("Array Element is " + num);
		}
		// Sort the Array List
		Arrays.sort(arrD, 0, 5);
		// Print the Sorted Array List
		System.out.println("The Sorted Double Array is:");
		for (double num : arrD) {
			System.out.println("Array Element is " + num);
		}
	}
}

package com.c4learn;

import java.util.Arrays;

public class ArrayDemo {

public static void main(String[] args) {

// Initialize unsorted double array

double arrD[] = { 3.1, 1.1, 4.1, 2.1, 5.1 };

// Print the Unsorted Array List

System.out.println("The Unsorted Double Array is:");

for (double num : arrD) {

System.out.println("Array Element is " + num);

}

// Sort the Array List

Arrays.sort(arrD, 0, 5);

// Print the Sorted Array List

System.out.println("The Sorted Double Array is:");

for (double num : arrD) {

System.out.println("Array Element is " + num);

}

Output of Program :

The Unsorted Double Array is:
Array Element is 3.1
Array Element is 1.1
Array Element is 4.1
Array Element is 2.1
Array Element is 5.1
The Sorted Double Array is:
Array Element is 1.1
Array Element is 2.1
Array Element is 3.1
Array Element is 4.1
Array Element is 5.1

The Unsorted Double Array is:

Array Element is 3.1

Array Element is 1.1

Array Element is 4.1

Array Element is 2.1

Array Element is 5.1

The Sorted Double Array is:

Array Element is 1.1

Array Element is 2.1

Array Element is 3.1

Array Element is 4.1

Array Element is 5.1

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