What is the best way to measure how long code takes to execute?

Question

I\'m trying to determine which approach to removing a string is the fastest.

I simply get the start and end time a

Answer 1

You may have to apply some statistical techniques here to iron out the variance. Try running the same piece of code 1000 times and then take the average time, and compare that. Simulations usually employ some sort of methods to 'clean up' the numbers, and this is one of those.