Sort Int Array In Descending Order Using Java 8
package com.demo.example;
import java.util.Arrays;
import java.util.Comparator;
public class SortReverseOrder {
public static void main(String[] args) {
/* Sort int array in descending/reverse order using java 8"
*
*/
int[] intArray = { 1, 2, 3, 7, 9, 10, 12, 18 };
System.out.println("####### Given Array : " + Arrays.toString(intArray));
int[] reverseOrderArr = Arrays.stream(intArray).boxed().sorted(Comparator.reverseOrder()).mapToInt(i -> i)
.toArray();
System.out.println("####### ReverseOrder Array : " + Arrays.toString(reverseOrderArr));
/* nth highest element in array using java 8
*
*/
System.out.println("####### nth highest element in array #######");
int n = 3; // Find the 3rd highest element
int nthHighestElement = Arrays.stream(intArray).boxed().sorted(Comparator.reverseOrder()).skip(n - 1)
.findFirst().orElse(-1);
System.out.println("nth highest element is : " + nthHighestElement);
/* Sort int array in Ascending order using java 8
*
*/
int[] sortedOrderArr = Arrays.stream(intArray).boxed().sorted().mapToInt(i -> i).toArray();
System.out.println("####### sortedOrder Array : " + Arrays.toString(sortedOrderArr));
/* nth smallest element in array using java 8
*
*/
System.out.println("####### nth smallest element in array #######");
int ns = 3; // Find the 3rd smallest element
int nthHighestSmallest = Arrays.stream(intArray).boxed().sorted().skip(ns - 1).findFirst().orElse(-1);
System.out.println("nth smallest element is : " + nthHighestSmallest);
}
}
####### Given Array : [1, 2, 3, 7, 9, 10, 12, 18]
####### ReverseOrder Array : [18, 12, 10, 9, 7, 3, 2, 1]
####### nth highest element in array #######
nth highest element is : 10
####### sortedOrder Array : [1, 2, 3, 7, 9, 10, 12, 18]
####### nth smallest element in array #######
nth smallest element is : 3
