This is an example of how to sort arrays. We are using an int array in the example, but the same API applies to any type of arrays e.g. byte[], char[], double[], float[], long[], short[]. Sorting an int array implies that you should:
- Create an
intarray with elements. - Invoke
sort(int[] a)API method of Arrays . It sorts an array in ascending order based on quicksort algorithm. - We can fully sort an array by using
sort(array)method of Arrays or we can partially sort an array by usingsort(array, startIndex, endIndex)API method of Arrays wherestartIndexis inclusive andendIndexis exclusive. We can print the array’s elements before and after sorting in order to check the elements’ sorting.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.Arrays;
public class SortArrayExample {
public static void main(String[] args) {
/*
Please note that the same API applies to any type of arrays e.g.
byte[], char[], double[], float[], long[], short[]
*/
// Create int array
int intArray[] = {1,4,3,5,2};
System.out.print("Array prior sorting :");
for(int i=0; i < intArray.length ; i++)
System.out.print(" " + intArray[i]);
/*
Arrays.sort() method sorts an array in ascending order based on quicksort
algorithm. We can fully sort an array by using Arrays.sort(array) operation
or we can partially sort an array by using Arrays.sort(array, startIndex, endIndex)
operation where startIndex is inclusive and endIndex is exclusive
*/
Arrays.sort(intArray);
System.out.print("nArray after full sort :");
for(int i=0; i < intArray.length ; i++)
System.out.print(" " + intArray[i]);
}
}
Output:
Array prior sorting : 1 4 3 5 2
Array after full sort : 1 2 3 4 5
This was an example of how to sort an array in Java.
