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.

March 24, 2020 - Learn how to reverse an array in Java using 3 simple methods with examples. Methods like using loops, Collections, and built-in methods with code explanations.

April 28, 2024 - In the above example, the array A1 contains the elements [1, 2, 3, 4, 5]. On reversing this array, we get an array A2, i.e., [5, 4, 3, 2, 1]. Note how the element 3, present in the middle of the array, remains in place.

January 16, 2025 - This option uses an additional ... Arrays.toString(array)); // print array // Call function to get reversed array int[] reversedArray = reverse(array); System.out.println("Reversed array : " + Arrays.toString(reversedArray)); // ...

January 8, 2024 - Let’s see how to invert an array using the Collections.reverse() method:

Output of my program: 7 random digits myArray[0] = 5 myArray[1] = 14 myArray[2] = 88 myArray[3] = 18 myArray[4] = 20 myArray[5] = 8 myArray[6] = 46 myArray[7] = 100 After reversing the array myArray[0] = 100 myArray[1] = 46 myArray[2] = 8 myArray[3] = 20 myArray[4] = 20 myArray[5] = 8 myArray[6] ...

September 1, 2008 - Following example reverses an array list by using Collections.reverse(ArrayList)method. import java.util.ArrayList; import java.util.Collections; public class Main { public static void main(String[] args) { ArrayList arrayList = new ArrayList(); arrayList.add("A"); arrayList.add("B"); arrayList.add("C"); arrayList.add("D"); arrayList.add("E"); System.out.println("Before Reverse Order: " + arrayList); Collections.reverse(arrayList); System.out.println("After Reverse Order: " + arrayList); } }

February 7, 2022 - You can reverse an array by converting an array to ArrayList and then reverse the ArrayList or use the Apache Commons ArrayUtils.reverse().

July 23, 2025 - // Java Program to iterate over an array // in reverse order using enhanced for loop import java.util.*; public class Main { public static void main(String[] args) { // Array initialization Integer[] arr = {10, 20, 30, 40, 50}; // Reversing ...

April 1, 2025 - Array Reversal is the process of taking an array (a list of elements) and flipping the order of its contents. Let's take an example, if you have an array(1,2,3,4,5), reversing it results: in (5,4, 3,2,1).

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This is another simple way to reverse an array in Java is by first converting the array to List and then using the Collections.reverse() method to reverse the ArrayList. This method takes a List and reverses the element in linear time. You should use this approach if you need to reverse an array in your project. You can reverse int, String, or any type of array by using this method. Let's see an example of reversing a String array in Java:

October 7, 2022 - Different methods are : ... import java.util.Scanner; public class Main { public static void main(String args[]) { int arr[] = {10, 20, 30, 40, 50}; int n=arr.length; for(int i=n-1; i>=0; i--) System.out.print(arr[i]+" "); } }

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

This particular method of array reverse in Java converts the given array into an ArrayList and then utilizes the Collections.reverse() method that takes up the items in the list and reverses the elements in linear time. Arrays of int, string or other types can be reversed with the help of this method.The following example depicts a reversal of a string type array in Java:

Java Program to print the elements of an array in reverse order - Java Program to print the elements of an array in reverse order on fibonacci, factorial, prime, armstrong, swap, reverse, search, sort, stack, queue, array, linkedlist, tree, graph, pattern, string etc.

On the second * iteration i is ... last. */ j = i - 1; i = 0; scanner.close(); while(i<j) { temp = number[i]; number[i] = number[j]; number[j] = temp; i++; j--; } System.out.print("Reversed array: "); for(i=0; i<counter; i++) { System.out.print(number[i]+ " "); } } }...

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.

In the last section, I have explained to you the logic or algorithm to reverse an array in place, now is the time to convert that algorithm into pseudo-code and then real code in Java. You will also calculate the time and space complexity of our solution, which is often required in Interviews as well as in the real world to meet your performance SLA. So, let's see an example of how you can reverse an array of String in Java in place.