Frequently Asked Questions on Greedy Algorithm
1. What is a greedy algorithm?
A greedy algorithm is an algorithm that makes the best local choice at each step in the hope of finding the global optimum solution. It is a heuristic approach, meaning it does not guarantee finding the optimal solution but often provides a good approximation.
2. When should I use a greedy algorithm?
Greedy algorithms are best suited for problems where optimal substructure exists. This means that the optimal solution to the problem can be constructed from the optimal solutions to its subproblems. Examples of problems where greedy algorithms are effective include Dijkstra’s shortest path algorithm, Kruskal’s minimum spanning tree algorithm, and Huffman coding.
3. What are the advantages and disadvantages of greedy algorithms?
Advantages of greedy algorithms:
- Easy to understand and implement.
- Often computationally efficient.
- Can provide good approximate solutions even when the optimal solution is difficult to find.
Disadvantages of greedy algorithms:
- Do not always guarantee finding the optimal solution.
- May not be applicable to all problems.
4. What are some examples of greedy algorithms?
Below are some example of greedy algorithms:
- Dijkstra’s shortest path algorithm
- Kruskal’s minimum spanning tree algorithm
- Huffman coding
- Fractional knapsack problem
- Activity selection problem
5. Where can I learn more about greedy algorithms?
There are many resources available online and in textbooks to learn more about greedy algorithms. Some good resource to start learning Greedy algorithms are:
- w3wiki
- MIT OpenCourseware:
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Greedy Algorithm Tutorial – Examples, Application and Practice Problem
Greedy Algorithm is defined as a method for solving optimization problems by taking decisions that result in the most evident and immediate benefit irrespective of the final outcome. It works for cases where minimization or maximization leads to the required solution.
Greedy Algorithm
Table of Content
- What is Greedy Algorithm?
- Characteristics of Greedy Algorithm
- Examples of Greedy Algorithm
- Why to use Greedy Approach?
- How does the Greedy Algorithm works?
- Greedy Algorithm Vs Dynamic Programming
- Applications of Greedy Algorithms
- Advantages of Greedy Algorithms
- Disadvantages of the Greedy Approach
- Greedy Algorithm Most Asked Interview Problems
- Frequently Asked Questions on Greedy Algorithm
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