combinatorics

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Ideal combinatoric strings

This is something I worked on a year ago, so I'll keep it (relatively) brief. Inspiration There's a keypad on my apartment building which accepts 5-digit codes. One day on »

Lower bound of big-O for sort

This is a quick story about today's thing that I discovered that is already in Wiki. I must be up in the triple digits at this point. That said, this »

The Subset Sum Problem

I have spent time working on almost every impossible problem there is. This is a lie, but it is rooted in a kernel of truth. I remember my very first »