Gepostet vor 4 Jahren, 3 Monaten in
Ein Spammer auf Github-User Shanselmans Blog hat aufgrund eines Fehlers sein komplettes Comment-Spam-Template gepostet, aus dem Teil kann man 4,3 Millarden unterschiedliche Spam-Varianten basteln. Auf Hackernews haben sie ihren Spaß damit:
It looks like this factors out to 4,351,250,624 unique comments.
How did you calculate this?
Because there is a one to one map (bijection) between the Cartesian Product set and the set of strings, the size of the product set is the same as the size of the set of strings. The cardinality of a cartesian product AxB, where A and B are sets, is |AxB|=|A|x|B|, so to find the size of the set of strings, you just need to multiply together the number of options at each point in the template where you have a choice.