Memoizing Fibonacci Numbers
Explore how to apply memoization to Fibonacci number calculations in C++, reducing time complexity from exponential to linear. This lesson helps you understand the use of lookup tables in dynamic programming to avoid redundant computations, making recursive algorithms more efficient and practical for coding interviews.
We'll cover the following...
We'll cover the following...
In Calculating Fibonnacci Numbers, we established that the recursive implementation of the Fibonacci sequence causes recalculations which result in exponential time complexity.
Let’s memoize the code now and see where that leads us. The basic idea is to check if an array already contains the result of the Fibonacci number that we are trying to find before ...