String.Join performance issue in C#

Question

I\'ve been researching a question that was presented to me: How to write a function that takes a string as input and returns a string with spaces between the characters. Th

Answer 1

Since you aren't using the Release build (which should have optimizations checked by default) and/or you're debugging through visual studio then the JITer will be prevented from making a lot of it's optimizations. Because of this you're just not getting a good picture of how long each operation really takes. Once you add in the optimizations you can get the real picture of what's going on.

It's also important that you not be debugging in visual studio. Go to the bin/release folder and double click the executable entirely outside of visual studio.