Brute Force Algorithms

[Fata1_Casua1ty]

I'm in a fairly advanced C++ algorithms class and my professor just gave us students an assignment to implement brute force algorithms into functions such as string matching, permutation and combination problems, and closet pair functions. This seems fairly trivial, yet he made it very clear that we would run into many problems in the debugging phase. Can y'all foresee any difficulties in this assignment. I haven't started yet, but I should probably pretty soon considering he might be right haha.