Derive an MIU string The MU puzzle in Douglas Hofstadter's Gödel, Escher, Bach involves a simple formal system called "MIU". It works as follows: MI is an MIU-string If xI is an MIU-string, then so is xIU. If Mx is an MIU-string, then so is Mxx. If xIIIy is an MIU-string, then so is xUy. If xUUy...

The Rudin-Shapiro sequence is a sequence of \$1\$s and \$-1\$s defined as follows: \$r_n = (-1)^{u_n}\$, where \$u_n\$ is the number of occurrences of (possibly overlapping) \$11\$ in the binary representation of \$n\$. For example, \$r_{461} = -1\$, because \$461\$ in binary is \$111001101\$, wh...

We need to produce a block cipher round function with a 1 bit round key size and a 7 bit message size with the highest level of cryptographic security according to our measure of security. Introduction We are going to need new symmetric encryption functions. We are at the point where we cannot im...

Write a program to print one of these strings verbatim: abcdefghijkmnopqrstuvwxyz ABCDEFGHIJKMNOPQRSTUVWXYZ

See also Stack Exchange Glossary - Dictionary of Commonly-Used Terms. Abbreviations marked with a star (*) are chat specific. ATO: Attempt This Online; a website similiar to TIO where newer versions of languages are hosted. Created by pxeger. *The Bakery: The Nineteenth Bakery, the room where spa...

Write a Web server quine Write a program that accepts HTTP requests on any port of your choice above 1024, and responds to requests for the root page with its own source code. It must work with, at least, Firefox and Chrome. If you choose port 8080, then a request to http://localhost:8080/ must s...