Algorithm

I have been posting data structure and coding interview questions on various topics such as Array, Queue, Stack, Binary tree, LinkedList, String, Number, ArrayList, etc. So I am consolidating a list of java coding interview questions to create an index post. I will keep adding links to this post whenever I will add new java […]

In this article, we will look at an interesting problem related to the Strings and [Sliding-Window Algorithm](https://java2blog.com/sliding-window-maximum-java/ “Sliding-Window Algorithm”). The problem is : "Given a String we have to Find the Maximum Number of Vowel Letters present in any Substring of the String, with the length of each Substring equal to K." Let us understand […]

In this article, we will look into an interesting problem asked in Coding Interviews related to Searching Algorithms. The problem is: Given a Sorted Array, we need to find the first and last position of an element in Sorted array. This problem is also known as Search for a range on Leetcode. We will look […]

Learn about how to convert Postfix to Infix in java.

Learn about how to convert Prefix to Postfix in java.

Learn about how to convert infix to postfix expressions in java.

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to find Minimum Number of Jumps to reach last Index. Problem Given an array A of positive integers possibly zeroes, every index indicating the maximum length of a jump that can […]

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to sort an array of 0s, 1s and 2s.We have already seen a post on sort 0s and 1s in an array. Problem Given an array containing zeroes, ones and twos […]

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions.   Problem Given an array with positive integers as elements indicating the maximum length of a jump which can be made from any position in the array. Check if it is possible to have a jumps combination […]

If you want to practice data structure and algorithm programs, you can go through Java coding interview questions. In this post, we will see how to find Inorder Successor in a Binary Search Tree. Problem Given a Binary Search Tree and a target node value. Find the Inorder successor of the given node value in the […]