An algorithm is a step-by-step procedure that has to be followed for solving any problem. Different problems need different algorithms for solving the problem. Every programmer selects an algorithm for solving a particular problem based on the requirements and speed of the algorithm. Still, there are certain top algorithms that programmers usually consider for solving different problems. Some of the well-known algorithms are the Brute-force algorithm, Greedy algorithm, Randomized algorithm, Dynamic programming algorithm, Recursive algorithm, Divide & Conquer algorithm, and Backtracking algorithm.