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());how to reverse a list in java
List<String> stringList = Arrays.asList("A", "B", "C");
Collections.reverse(stringList);
assertThat(stringList).containsExactly("C", "B", "A");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
}reverse arraylist java recursion
public ArrayList<Object> reverse(ArrayList<Object> arrayList) {
if(arrayList.size() > 1) {
Object value = arrayList.remove(0);
reverse(arrayList);
arrayList.add(value);
}
return arrayList;
}Copyright © 2021 Codeinu
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