In a programming language of your choice, write a full program that, when run, prints a positive integer N and then modifies its own source file such that the next time it is run it will print N+1.
For example, this (ungolfed) Python 3 program satisfies this behavior:
N = 1
print(N)
with open(_...
A simple one today. Write the shortest program that draws a "sawtooth alphabet" given a positive integer for the height. You must write the name of your programming language when you come to the letter it starts with.
For example, if your language is Python and the input is 1 the output should b...
GNU sed, 14 bytes
Usually I post sed answers just to add to the diversity of languages used for a question, since sed code gets long fast, but this is one of those rare occasions where I can compete.
$=;$eecho>>s
Run: sed -nf s s
The assumption is that the source filename is called s. A sed ...
Challenge description
We've had a few challenges involving the Look-and-say sequence. Quick reminder:
The sequence starts with 1,
Subsequent terms of this sequence are generated by enumerating each group of repeating digits in the previous term,
So the first few terms are:
1 "one"
11...
It is time to embark on a perilous quest to defeat the British Intelligence. The aim of this challenge is to write the shortest code that will solve a Nonogram.
What is a Nonogram?
The rules are simple.
You have a grid of squares, which must be either filled in black or left blank. Bes...
Jelly, 14 bytes
+Ṫ
⁹Ṫ×Ṫ:Ḣ
IEŀḊ
Test it at TryItOnline
How?
IEŀḊ - main link, take an argument (a list)
I - take the difference of the elements in the list
E - all equal returns 1 else returns 0
Ḋ - dequeue - return list[1:]
ŀ - call the link at index (0 calls link ...
Python 3, 314 bytes
There's a lot of bytes wasted on the roman numerals, so there's likely some golfing to be done there.
import re
def f(x,r="",n={1:"I",4:"IV",5:"V",9:"IX",10:"X",40:"XL",50:"L",90:"XC",100:"C",400:"CD",500:"D",900:"CM",1e3:"M"}):
for v,i in sorted(n.items(),reverse=1):
whi...
I have a grandfathered Google Apps for Work account since I had my appengine app running since before they started the whole Apps for Work thing and don't have to pay anything.
I haven't touched the actual app since long before the Apps for Work thing came around, and though I got the emails abo...
This answer to Making food last for a large group made me realize that using the zombies as a source of resources is pretty much never covered by genre pieces even when it is essentially a siege situation.
What ways can the besieged find to use the (“killed” for good) zombies as a source of food...
