In the writeup, I wanted to see that you had correct expectations for
the asymptotic running times of the algorithms you chose. You should get
a sufficient number of data points, plot the data to show the trend in
the behavior of each search, and show the relationship between different
searches. Then you should explain whether the data agree with your expectations,
what are the secondary effects, and what caused the secondary effects.
For recursive and linear implementations of the same big-O algorithms,
recursive implementation is slower than the linear one. This is mainly
due to the extra cost of all the function calls in the recursive implementation.