Consider the \$4\$ divisors of \$6\$: \$1, 2, 3, 6\$. We can calculate the harmonic mean of these numbers as $$\frac 4 {\frac 1 1 + \frac 1 2 + \frac 1 3 + \frac 1 6} = \frac 4 {\frac {12} 6} = \frac 4 2 = 2$$ However, if we take the \$6\$ divisors of \$12\$ (\$1, 2, 3, 4, 6, 12\$) and calculate ...

I was pondering today about how many characters it would take in each language to throw an exception, and noticed there wasn't any existing collection of answers, so: The task Throw an exception in the least amount of characters. If your language does not have exceptions, then a panic is valid. A...

Worst case of Slowsort code-golf sequence sorting Background Slowsort is an in-place, stable sorting algorithm that has worse-than-polynomial time complexity. The pseudocode for Slowsort looks like this: procedure slowsort(A[], i, j) // Sort array range A[i ... j] in-place. if i ≥ j ...

This question may not be that creative, but I believe that it is different enough to pose a new challenge. The Challenge Your challenge is to write the shortest program possible that can take any valid expression in Reverse Polish Notation and convert it to infix notation that obeys the order o...

Infix notation is a method of printing mathematical expressions where each operator sits between its two arguments, such as \$ \left(5 \cdot 4\right) + 3 \$. Prefix notation is a method of printing expressions where operators sit before their arguments. The equivalent of the above is +*543. It's ...

Try to develop this code with as little characters as possible. The low-cost plane and air taxi airline VOLASO operates in multiple airports throughout length and width of the world. The company, although it offers ridiculous prices on its ultra-small flights, has with an expensive baggage check-...

companies network used to warning for me: "Computer of me used to hacker attack with virus and you should do something!"

Task : Wonky numbers are 3-or-more digit numbers that meet one or more of the following criteria: Any digit followed by all zeros: 100, 70000 Same digit throughout the entirety of the number : 1111, 777777777 The digits are in ascending order : 1234, 1234567890 The digits are in descending order...

So, normally, this is a forbidden loophole to fetch the desired output from an external source. But this challenge is an exception ! In this challenge you will have to fetch data from the internet and output it to the SDTOUT. The task For the purpose of this challenge, you'll be the owner of the...

Some questions like this are obviously off-topic, but some what sees on-topic but not on this site (CCGC)? Like: “ What programming language is? +[.+] Prints ascii table. but what programming language is? ” Is off-topic in CCGC but why? Edit: not including cops-and-robbers