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Java Program to sort Integer list in reversed order
Following is our integer array:
Integer[] arr = {20, 50, 100, 150, 200, 250, 300, 350, 400, 500};
Now convert the above Integer array to List:
List<Integer> list = new ArrayList<>(Arrays.asList(arr));
Now, to sort the above Integer list in reversed order:
Comparator<Integer> initialComp = Integer::compare; Comparator<Integer> revComp = initialComp.reversed(); Collections.sort(list, revComp);
The following is an example to sort Integer list in reversed order:
Example
import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.List; public class Demo { public static void main(String[] args) { Integer[] arr = {20, 50, 100, 150, 200, 250, 300, 350, 400, 500}; List<Integer> list = new ArrayList<>(Arrays.asList(arr)); System.out.println("Integer List = "+list); Comparator<Integer> initialComp = Integer::compare; Comparator<Integer> revComp = initialComp.reversed(); Collections.sort(list, revComp); System.out.println("Integer in reversed order..."); list .stream() .forEach(c -> System.out.print(c + "
")); } }
Output
Integer List = [20, 50, 100, 150, 200, 250, 300, 350, 400, 500] Integer in reversed order... 500 400 350 300 250 200 150 100 50 20
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