👉 Precomputing is a process where an algorithm or system has already been computed and stored in memory, which can then be reused by another program without recompiling or executing it. It is often used when performing calculations that are computationally intensive or if there are large amounts of data to compute. In computer science, precomputed values are usually used in situations where the exact value of a variable needs to be computed multiple times, but only once. This can save time and reduce the number of computations