Java
Java Array | Declaration, Initialization, Example Code
Array in Java is an important concept and, in this article, we are going to understand the array and its working. Java array is an object that is used to hold multiple...
35 Java Interview Questions for Freshers and Experienced 2022
If you are preparing for a Java interview or looking job opportunity in Java development, here are the 35 Java interview questions you must prepare for. Whether you are a...
Second Largest/Smallest Number in Array in C/C++, Java and Python
In an earlier tutorial, we have seen how to find the smallest or largest number from the integer array. In this tutorial, we are going to find the second smallest number in an...
Find the Smallest and Largest Number in Array in C/C++, Java and Python
Here is the program to find the smallest and largest number in the array in C/C++, Java and Python. I have also added the comment explaining each line of the code. So the code...
Reverse a Linked List In JAVA [Complete Code]
Problem statement: You have given a pointer to the head node of a linked list, the task is to reverse the linked list. Example: 1->2->3->4->5->nullOutput:...
Java Regex Example Explained | Regular Expression
This tutorial aims to explain regular expressions in Java, why and how you can efficiently use them. I will explain Java regex example along with the code. What are Regular...
[Solved] Program to Find Pairs that have Desired Sum in Java, Python
Problem Statement: Consider an array of integers that may contain both positive and negative integers, called numbers. Write a program that finds all the pairs of integers whose...
[Solved] Find Lexicographically Smallest and Largest Substring
Problem Statement: You are given a string (says 's'), and an integer ( says 'k'). Write a program to find the lexicographically smallest and largest substring from given...
Maximum Sum of Hourglass in Matrix | Solved in Java, Python
First of all, understand the Hourglass. It is shaped as shown in the below image. There can be multiple hourglasses in the 2D array (matrix). Problem Statement: Write...