The rule is: a, b, c, d, e is an integer from 0 to 1000, no relation between a, b, c, d, e so a can equal to b or c, ... can not use more than 3 loops (it can be 3 nested loops or 3 normal loops, or 2 nested loops + 1 normal loop, ...) you need to find all the answers for (a, b, c, d, e) that i...

Introduction: I think we've all heard of it, but here a very brief summary: Noah gathered two of every species of animal on the planet, male and female, to save in his Ark during a great flood. The actual quote from the Bible is: Genesis 7:2-3 You must take with you seven of every kind of ...

There's an old (2014y) conversation about this: Let's design a nice badge icon!, but without any real outcome. However, quite recently we got a new site design, including our new logo: For me it looks like pretty good candidate for badge icon, because, you know, it's a medal. Possible modific...

I wrote a Python 3 answer. I called it Python 3 in the title; however, it works equally well in Python 2. I discovered that I am able to remove several bytes from the answer, but only if I use Python 2 instead of 3. Is it acceptable to change the answer from Python 3 to Python 2, or should I post...

Print the ends and middle of your code The challenge is simple: Print the first, middle, and last character of your program's source code. The middle character is defined as follows, assuming a source length of n characters, and 1-indexing: If n is even, print the n/2-th and n/2 + 1-th charac...

answer-chaining Make a bigger number Each answer on this question must be a complete program that outputs a positive integer in decimal (trailing newlines are permitted). That number must also be larger than the numbers output by all the valid answers at the time of posting. Scoring Your ans...

There's an echo in my array... echo in my array... my array... Help! I seem to have an annoying echo in some of my floating point arrays, and I'd like to get rid of it. When this occurs, the original array repeats itself somewhere in the middle causing the values to be added to each other. Fo...

One sqrt function for unsigned not float Write the function sqrti(x) that return the square root of one not negative integer number x, where x has not decimal part, and the result one integer (so truncate to 0 digits). You may not use as function and operation nothing other than floor and sign ...

Multi-Digit × Single-Digit Checker code-golf arithmetic Introduction The story below is fictional, don't worry. Times table hard. More curriculum. Class advance. Son behind. Horror. Help. ahem Pardon me. So... I've got a big problem. The times table is huge, and all the mnemonic rules we've ...