A graph is a mathematical and abstract representation of a set of objects where some pairs of objects are connected by links. The objects, often called vertices or nodes, can represent various entities, and the links, called edges, represent relationships or connections between the entities. Graphs are widely used in computer science and various other … Read more


A trie (pronounced “try”) is a tree-like data structure that is used to store a dynamic set or associative array where the keys are usually strings. The term “trie” comes from the word “retrieval” because of its suitability for retrieval tasks. Tries are particularly efficient for tasks that involve searching for, inserting, or deleting keys … Read more


A heap is a specialized tree-based data structure that satisfies the heap property. Heaps are commonly used to implement priority queues and are crucial in algorithms related to sorting, graph algorithms, and scheduling processes. There are two main types of heaps: Max Heap and Min Heap. Heap Property: Key Operations: Heap Structure: A heap is … Read more

Linear Search

Linear search is a straightforward and intuitive searching algorithm that finds the position of a target value within a list or array. It is also known as sequential search, and it works by checking each element in the list one by one until a match is found or the entire list has been traversed. How … Read more


A tree is a hierarchical data structure that consists of nodes connected by edges. Each node in a tree has a parent-child relationship with other nodes, and the topmost node is called the root. The nodes without any children are called leaves. Trees are widely used in computer science for representing hierarchical relationships, organizing data, … Read more

Stacks & Queues

A stack is a linear data structure that follows the Last-In-First-Out (LIFO) principle. In a stack, elements are added and removed from the same end, often referred to as the “top” of the stack. The last element added is the first one to be removed. Key Operations: Common Use Cases: Implementation: In many programming languages, … Read more

Linked Lists

A linked list is a linear data structure in which elements are stored in nodes, and each node points to the next node in the sequence. Unlike arrays, linked lists do not require contiguous memory locations, and their size can be dynamically changed during runtime. Each node in a linked list contains two fields: a … Read more

Arrays as Data Structures

An array is a fundamental data structure that stores elements of the same data type in contiguous memory locations. Each element in an array is identified by its index or key. The index is an integer value that represents the position of the element in the array. Characteristics of Arrays: Declaration and Initialization: In most … Read more

Hash Tables

A hash table, also known as a hash map, is an inbuilt data structure that is used to store key-value pairs. It uses a hash function to compute an index into an array in which an element will be inserted or searched. The advantage of the hash table is its complexity. It offers an completxity … Read more

Data Structures

A data structure is a way of organizing and storing data in a computer so that it can be accessed and used efficiently. Data structures are important for managing and organizing information in a way that enables efficient retrieval and modification. Data structures categories: Why Use Data Structures? The use of data structures is fundamental … Read more