Problem Statement Given a number n. Find the sum of the first n even natural numbers. Example Input : 4 Output : 20 Explaination The Sum of the first 4 natural numbers is 20 because 2+4+6+8 = 20 Constraints 1 <= N <= 10000 Approach 1: Naive Approach (Using a for Loop) This is the Brute-Force method to find the sum ...
The set of instructions is repeated using both recursion and iteration. When a statement within a function repeatedly invokes itself, recursion occurs. Iteration happens when a loop runs repeatedly until the controlling condition is satisfied. Recursion and iteration vary fundamentally doing the same thing. iteration is used to apply a set of instructions that we want ...
Data Structures and algorithms is one of the most important topics that you need to have knowledge of along the path of being a software developer. The knowledge of this topic helps solve problems much more easily in the real world. It’s a skill that comes with practice. In this article, I will speak about the best ...
An array is a linear collection of values stored at contiguous memory locations. A subarray is nothing but a slice of these contiguous memory locations of the actual array or we can say that a subarray is nothing but any contiguous part of a given array. A subset is often confused with subarray and subsequence ...
A tree is a nonlinear hierarchical data structure that consists of nodes connected by edges. The most common type of tree is the binary tree. In this, each node has 2 children, i.e., Left and Right. The node that doesn’t have any parents is known as the root node, and the node that doesn’t have any children nodes is known as the leaf node. ...
A linked list can be considered as a train, where each boogie is connected by links. Formally defined, a linked list is a linear data structure that consists of nodes that are connected. Each node has some data associated with it, along with the address of the next node. The last node of a linked list points ...
The terms “web browser” and “search engine” are associated with the Internet. A web browser is an application software used to load HTML files, such as online pages, whereas a search engine is essentially a tool for accessing information on the Internet. Learn more about search engines and web browsers in this article, including how ...
A graph is a non-linear data structure. It consists of several nodes, also referred to as vertices. The nodes of a graph are connected through edges. A graph in which there’s associated a sense of a specific direction with each edge is referred to as a directed graph. Directed graphs, from graph theory, are extensively used ...
The FizzBuzz problem, a common coding exercise, involves iterating from 1 to n. For each integer, print “Fizz” if it’s a multiple of 3, “Buzz” if a multiple of 5, “FizzBuzz” if divisible by both 3 and 5, and the number itself if none of these conditions apply. Creating a FizzBuzz program efficiently handles these ...
Linked lists data structures consist of a sequence of nodes that store data and point to the next node. Linked lists have multiple variations and two of the important variations are singly linked lists and doubly linked lists. The first node is called the head and the last node of the linked list is called the tail. ...