This is a Leet Code problem (1578 – Minimum Deletion Cost to Avoid Repeating Letters) solved in Java, the problem description is:
Given a string s and an array of integers cost where cost[i] is the cost of deleting the ith character in s.
Category: Java
Difference between Synchronized & Volatile in Java
volatile keyword in Java is field modifier while synchronized modifies code blocks and methods. synchronized acquires and releases locks on entire code block or method
Dynamic Web Application option not available / missing in Eclipse?
An option to create new Dynamic Web Application is missing/ not available in any version of the Eclipse. Follow the below steps to fix the problem:
ArrayList vs. LinkedList
Arraylist is an index based Data Structure. While using Arraylist for searching or getting an element from an array with index is pretty fast. ArrayList
How to create and modify function using Jshell in Java CLI
To use the jShell effectively, You must be able to create function so that you can test your functionality quickly and it will be really
How to access REF CURSOR Data in Java ?
In Java, a REF CURSOR is known as a ResultSet object and can be accessed as shown below: import oracle.jdbc.*; … CallableStatement cstmt; ResultSet cursor; // Use a PL/SQL block
Convert List to a Set / Set to List in Java
In Java, When we are working on real time projects.. Generally we came across scenarios like Converting List to Set Object or Vice Versa. 1.
JAR vs. WAR vs. EAR
In J2EE application modules are packaged as EAR, JAR and WAR based on their functionality JAR: EJB modules which contains enterprise java beans class
java.lang.ClassCastException: org.hibernate.impl.CriteriaImpl cannot be cast to com.YourClass
When working on any application which Uses Java + Hibernate 3, you face errors like the one shown below: java.lang.ClassCastException: org.hibernate.impl.CriteriaImpl cannot be cast to
How to iterate HashMap in Java ?
public static void printMap(Map mp) { Iterator it = mp.entrySet().iterator(); while (it.hasNext()) { Map.Entry pair = (Map.Entry) it.next(); System.out.println(pair.getKey() + ” = ” +
Why List = new ArrayList() ? in Java
The main reason you’d do this is to decouple your code from a specific implementation of the interface. When you write your code like this:
Java 9 : JShell (REPL) feature
We heard a lot about REPL when we were developing AngularJS app or NodeJS app. Which works on Read-Evaluate-Print-Loop mechanism. Java Shell tool is an interactive