The problem with "trivial" is that it's in the eye of the beyolder. And everything can seem "trivial" after you've studied it long enough ;-) For instance, I'd

The problem with "trivial" is that it's in the eye of the beyolder. And everything can seem "trivial" after you've studied it long enough ;-) For instance, I'd say the matrix implementation of Levenshtein is quite trivial...