Matrices represent images, game boards, and maps. Many classic problems reduce to transforming matrices, traversing them, or treating grids as graphs for search...
Searching refers to the process of finding the location of a specific element within a collection of data, such as an array, list, tree, or graph. It underpins many applications, from databases and information retrieval to routing and artificial intelligence. Depending on the organization of the dat...
In many areas of life, we come across systems where elements are deeply interconnected—whether through physical routes, digital networks, or abstract relationships. Graphs offer a flexible way to represent and make sense of these connections...
Greedy algorithms build a solution one step at a time. At each step, grab the option that looks best right now by some simple rule (highest value, earliest finish, shortest length, etc.). Keep it if it doesn’t break the rules of the problem...
Dynamic Programming (DP) is a way to solve complex problems by breaking them into smaller, easier problems. Instead of solving the same small problems again and again, DP stores their solutions in a structure like an array, table, or map. This avoids wasting time on repeated calculations and makes t...
In computer science, a collection (often interchangeably referred to as a container) is a sophisticated data structure designed to hold multiple entities, these could be simple elements like numbers or text strings, or more complex objects like user-defined structures. Collections help you store, or...
In the realm of computer science, 'sorting' refers to the process of arranging a collection of items in a specific, predetermined order. This order is based on certain criteria that are defined beforehand...
Data structures and algorithms are fundamental concepts in computer science that are key to building efficient software...
Backtracking is a method used to solve problems by building potential solutions step by step. If it becomes clear that a partial solution cannot lead to a valid final solution, the process "backtracks" by undoing the last step and trying a different path. This approach is commonly applied to constra...
Programming puzzles and brain teasers are a fun way to sharpen your coding and problem-solving skills. You’ll often see them in technical interviews, where they’re used to test how you think, analyze problems, and come up with efficient solutions. To do well, it helps to practice and build solid str...