Julia, 77 bytes n->collect(filter(i->i==∪(i)&&sum(j->Rational(1,j),i)==1,partitions(n)))[1] This is an inefficient lambda function that accepts an integer and returns an integer array. To call it, assign it to a variable. We get the partitions of the integer using partitions. We then filter...

Well... there are 59 (now 60) questions tagged sorting, but no simple quicksorts. That must be fixed. For those unfamiliar with quicksort, here is a breakdown, courtesy of Wikipedia- Pick an element, called a pivot, from the array. Reorder the array so that all elements with values less than...

Time to add to the list of Minecraft Meta Questions! So, my question is fairly basic. When we run programs in other langs through the command line, we don't count anything but their flags. For example, take Java. java B.java [arguments] We wouldn't count this bit to run the program. We would c...

Pyth, 30 bytes zjms.OdC.nM[JrR7.zKms_cd3J_J_K My program expects all metadata on the first line, and the image data row by row on the lines after on stdin. To help, this is a small Python program to convert any valid PPM file into a file my program can understand: import sys p3, w, h, d, *dat...

This challenge is a tribute to PPCG user Dennis for winning the robbers' part of The Programming Language Quiz. Looking at Dennis' PPCG profile page we can see some pretty impressive stuff: He currently has over thirty-seven thousand reputation, making him second in rep overall, surpassing th...