In this tutorial, we will learn how to convert an Array to a List in Java. To convert an array to a list we have three methods.
Since using existing Java classes is now allowed on Programming Job interviews, you need to create your own to write code. For this example, I have created our own singly linked list class. Similar tojava.util.LinkedListalso contains anested static classNode, which represents a node in the l...
Reversing Strings in Java Using LoopsTo reverse strings in Java using loops, we use either ‘for’ or ‘while’ loops, making it beginner-friendly. These loops make it easier to traverse characters backward, which makes it simple and effective to create a reversed string....
where we loop through array and inserting each element in a Set, which ensures that we discard duplicate because Set doesn't allow them to insert, or you can also use remove method of ArrayList to get rid of them, once you found that those are duplicates....
Also, if you’re using an IDE, you don’t need to do all of this manually. For example: in Eclipse, you can generate a toString method by opening the Book.java and right-click on the source code and select: Source > Generate > toString ...
Here thenamerefers to the name we are searching for in the given list ofcustomers. This method returns the firstCustomerobject in the list with a matchingname, ornullif no suchCustomerexists. 3.4. Looping With anIterator Iteratoris another way that we can traverse a list of items. ...
How do I obtain elements in an ArrayList using indexes? How do I convert a map into a JSON string? How do I obtain the class name of an object? How do I delete an element from a record? How do I convert a JSON object into a HashMap? How do I convert an ArrayBuffer to...
How do I obtain elements in an ArrayList using indexes? How do I convert a map into a JSON string? How do I obtain the class name of an object? How do I delete an element from a record? How do I convert a JSON object into a HashMap? How do I convert an ArrayBuffer to...
A linked list is a data structure that consists of a sequence of nodes, where each node stores an element and a reference to the next node. In Java, the
// Function to remove duplicates from an array in-place int removeDuplicates(int arr[], int n) { if (n == 0 || n == 1) return n; // Initialize index to keep track of the non-duplicate elements int index = 0; // Traverse the array ...