- Java Data Types
Java Data Types In the previous tutorial we discussed Java Variables and learned that every variable must have three things: a type, a name, and a value. The type (also called data type) tells Java what kind of data the variable can hold and how much memory to allocate for it. In this tutorial, we…
- Java Variables
What Is a Variable? Think of a variable as a labeled box in your computer’s memory. You give the box a name, decide what kind of thing it can hold, and then put a value inside it. Later, you can look at the value, change it, or pass it along to another part of your […]
- Notification System
A notification system has already become a very popular feature for many applications in recent years. A notification alerts a user with important information like breaking news, product updates, events, offerings, etc. It has become an indispensable part of our daily life. In this chapter, you are…
- Introduction
What is system design? System design is the process of designing the elements of a system such as the architecture, modules and components, the different interfaces of those components and the data that goes through that system. It is meant to satisfy specific needs and requirements of a business…
- Max Subset Sum No Adjacent
Write a function that takes in an array of positive integers and returns the maximum sum of non-adjacent elements in the array. If the input array is empty, the function should return 0. Sample input [75, 105, 120, 75, 90, 135] Sample output 330 = 75 + 120 + 135 Solution Time Complexity: O(n) Space…