how to reverse order of arraylist
ArrayList<Integer> arrlist = new ArrayList<Integer>();
//This is how to reverse arrlist's oringinal order.
Collections.reverse(arrlist);
//This is how to sort in a reverse order
Collections.sort(arrlist, Collections.reverseOrder());java list sort descending
import java.util.*;
public class Details {
public static void main(String args[]){
ArrayList<String> arraylist = new ArrayList<String>();
arraylist.add("AA");
arraylist.add("ZZ");
arraylist.add("CC");
arraylist.add("FF");
/*Unsorted List: ArrayList content before sorting*/
System.out.println("Before Sorting:");
for(String str: arraylist){
System.out.println(str);
}
/* Sorting in decreasing order*/
Collections.sort(arraylist, Collections.reverseOrder());
/* Sorted List in reverse order*/
System.out.println("ArrayList in descending order:");
for(String str: arraylist){
System.out.println(str);
}
}
}Arraylist reverse in java
public static void main(String[] args) {
ArrayList<Integer>list = new ArrayList<>();
for(int i = 1; i < 6; i++){ // bu element index degil.
list.add(i);
}
System.out.println(list); // [1, 2, 3, 4, 5]
for (int i = list.size()-1; i >= 0; i--) {
int each = list.get(i); // unboxing
System.out.print(each + " "); // 5 4 3 2 1
}Copyright © 2021 Codeinu
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