I want to post a challenge where the scoring is based on complexity but I don't know a) how to define this and b) how well it would be received. As an example, say the FPU (Floating Point Unit) has been disabled and the challenge requires floating point arithmetic. If adding or subtracting two n...

Given an integer n, 0 or higher, output the lowest power of 2 that has two identical sequences of n digits in decimal, and the two indices where the digit sequences start. n      Output      Proof (don't output this) 0 => 0 [0 1]        (_1 & 1_) 1 => 16 [0 4]      (65536 & 6553...

Challenge Your task is to output the time (in 12 hour time) in ascii art. All characters that will be used are as follows: ___ __ ___ ____ _ _ _____ __ ______ / _ \ /_ | |__ \ |___ \ | || | | ____| / / |____ | | | | | | | ) | __) | | || |_ | |__ /...

A Free Sample of Autocorrelation Consider a 1-dimensional, real-valued vector x that represents observations of some process measured at equally spaced intervals over time. We call x a time series. Let n denote the length of x and denote the arithmetic mean of x as x̄. The sample autocovarianc...

Can you design a Builder Pattern verified at compile time ? Given a class: public class Human { private final String name; private final Int age; private final Double money; public Human(String name, Int age, Double money) { this.name = name; this.age = name; this.money = n...

Seriously, Golfscript, CJam, or Pyth? Part II Your goal is to make two or more Seriously, Golfscript, CJam or Pyth programs as similar as possible. Scoring Answers will be scored based on Levenshtein distance, which is the least number of edits (insertions, deletions and substitutions only) ne...

Implement floating-point square-root with integer addition, subtraction and bit-shifts only Someone has broken your favourite language! Almost all arithmetic functions are now unusable. You've been left with integer addition, subtraction, bit-shifts (both left and right) and bitwise operators (A...