olegarch questions

olegarch answers

• Reversible "hash" function from 64-bit integer to 64-bit integer
• Why is it impossible to find a specified value in a sorted array faster than O(log n)?
• Fast fuzzy/approximate search in dictionary of strings in Ruby
• Sorting multiple strings into an element
• How to encrypt/decrypt URL parameters in javascript?
• mmap vs O_DIRECT for random reads (what are the buffers involved?)
• htonl() vs __builtin_bswap32()
• printing values in array pointer in C
• Branchless version of swapping x with y if x > y?
• How to make a simple public-key cryptographic algorithm? [closed]