What is the significance of an algorithm in computer science and how does it impact the efficiency of problem-solving processes?

An algorithm is a set of instructions that a computer follows to solve a problem or perform a task. In computer science, algorithms are crucial because they determine the efficiency and effectiveness of problem-solving processes. By using well-designed algorithms, computer scientists can optimize the way tasks are completed, leading to faster and more accurate results. This impacts the efficiency of problem-solving processes by reducing the time and resources needed to find solutions, ultimately improving the overall performance of computer systems.