July 11, 2025 - When we are working with a String array, we can use a StringBuilder and append each array element with a for loop decrementing from the array's length, then convert the StringBuilder to a string, and split back into an array.

January 8, 2024 - We’ll see a few different ways to do this using pure Java 8-based solutions – some of those mutate an existing array and some create a new one. Next, we’ll look at two solutions using external libraries — one using Apache Commons Lang and one using Google Guava. The basic idea is to reverse ...

March 24, 2020 - Using a for loop to traverse the array and copy the elements in another array in reverse order. Using in-place reversal in which the elements are swapped to place them in reverse order.

February 7, 2022 - You can also use Apache Commons ArrayUtils.reverse() method to reverse any array in Java. This method is overloaded to reverse byte, short, long, int, float, double and String array.

April 1, 2025 - Collections.reverse(): Perfect for ArrayList instances. A new array: Generates a backward copy of the initial array. Java 8 Stream: Beneficial for functional programming styles.

December 6, 2022 - Learn to reverse an array using for-loop, swapping items, Collections API and also the Apache Commons's ArrayUtils class.

April 3, 2025 - The Java standard library has provided the Collections.reverse method to reverse the order of the elements in the given List. This convenient method does in-place reversing, which will reverse the order in the original list it received.

import java.util.*; public class ReverseArray { public static void main (String[] args) throws java.lang.Exception { // Given input array String[] inputArray = {"India","USA","Germany","Australia"}; // Print array before reverse System.out.println("Array without reverse : " + Arrays.toString(inputArray)); // Calling method to swap elements reverseArray(inputArray); } public static void reverseArray(String[] arr) { // Converting Array to List List<String> list = Arrays.asList(arr); // Reversing the list using Collections.reverse() method Collections.reverse(list); // Converting list back to Arr

April 28, 2024 - Space Complexity - The space complexity ... array. In this method, we use the java.util.Collections.reverse(List list) function that reverses the elements of the specified List....

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January 16, 2025 - Array before reverse : [1, 4, 9, 16, 25] Array after reverse : [25, 16, 9, 4, 1] In Java, the reverse method, which is part of the existing Collections framework, can be used to reverse an array.

October 3, 2016 - Yes, you can reverse the array by writing your own function, which loops through the array and swaps elements until the array is sorted. That's actually should be your first approach to coding interviews.

September 7, 2025 - Each call to data[index] shifts from the start of the array to the right position. Nothing gets copied during this read, the runtime just calculates the offset and fetches the value. Reversing depends on the same principle, except the offsets are taken in the opposite order. It helps to remember that Java arrays store their length as part of their structure.

October 7, 2022 - System.out.println(Arrays.stream(arr).boxed().sorted(Collections.reverseOrder()).collect(Collectors.toList())); //java 8 · Log in to Reply ·

September 19, 2025 - Almost there... just a few more seconds

All you need to do is a loop over the array from start to the middle element and swap the first element to the last, second element to the second last until you reach the middle element.