Which form is correct: "in detail" or "in details"?
I want to use it while describing an algorithm. First I give a general description of an algorithm and then more detailed description.
Is correct. Assuming that the context looks like this.
[After general description]
In detail, the algorithm will....
But you could always say..
Here, I describe the details of the algorithm.
"you describe the algorithm in detail" or "you describe the details of the algorithm".