Nov 25, 2024 · The simplest way to reverse an array in Java is by using a loop to swap elements or by using the helper methods from the Collections and Arrays classes. Example: Let’s take an example to reverse an array using a basic loop approach.

Jan 26, 2010 · java.util.Collections.reverse() can reverse java.util.Lists and java.util.Arrays.asList() returns a list that wraps the the specific array you pass to it, therefore yourArray is reversed after the invocation of Collections.reverse().

May 20, 2022 · In this tutorial we have learned how to how to reverse an Array in Java by using different methods like using for loop, in-place method, ArrayList, StringBuilder.append( ) method and ArrayUtils.reverse( ) method.

Apr 1, 2025 · Q #1) How do you Reverse an Array in Java? Answer: There are three methods to reverse an array in Java. 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.

Aug 13, 2019 · You can reverse an array by converting an array to ArrayList and then reverse the ArrayList or use the Apache Commons ArrayUtils.reverse().

Dec 9, 2024 · In Java, iterating over an array in reverse order means accessing the elements of the array from the last to the first. We have multiple ways to iterate an array in reverse order. Example 1: The most simplest way to iterate over an array in reverse order is by using a for loop.

Nov 20, 2012 · I am trying to reverse an array in 2 ways: 1) By creating a new array which was very easy: int[] reverseArray = new int[array.length]; for(int i = 0; i < reverseArray.length; i++) { reverseArray[i] = array[array.length - i - 1]; return reverseArray;

Dec 6, 2022 · Learn how to reverse or invert an array in Java. A reversed array is of equal size to the original array and contains the same items but in the reverse order. 1. Collections.reverse() API The easiest way to reverse the array is to use the existing APIs built …

To reverse Array in Java, use looping statement to traverse through the array and reverse the array, or use ArrayUtils.reverse() method of Apache’s commons.lang package. If you are using commons.lang library in your application, you can directly use ArrayUtils class to …

Feb 14, 2025 · For example, the following method returns an array that is the reversal of another array. public static int [] revers(int [] list){ int[] result = new int[list.length]; for (int i=0, j=result.length-1; i<list.length; i++, j--){ result[j]= list[i]; } return result; }