++[[]][0] returns 1. If you do something like ++5 it errors (trying to overwrite a constant), same with ++[], but I guess putting it in another array creates a reference to the inner array as an object?
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Decide a C integer literal
Objective
Given a string, decide whether it is a valid C integer literal.
C integer literal
A C integer literal consists of:
One of:
0 followed by zero or more octal digits (0–7)
A nonzero decimal digit followed by zero or more decimal digits (0–9)
0X or 0x, followe...
Write a few lines of Python code, X, that does not reference any global variables, such that
def method():
X
print(a)
method()
prints 1 but
def method():
X
X
print(a)
method()
prints 2.
So, I hate to be a stickler, but it seems like vars and locals are actually glob...
1
For a while now, most bounties on our site are rewards for existing answers. As a consequence, it's pretty hard to spot any bounty that would fall into the 'Draw attention' or 'Bonus / Side challenge' categories -- and we have to open each and every entry to figure it out. I've to admit that I pe...
The Knight's Dialer
Imagine you place a knight chess piece on a phone dial pad. This chess piece moves in an uppercase "L" shape: two steps horizontally followed by one vertically, or one step horizontally then two vertically:
+-+
|1| 2 3
+-+
`-------v
| +-+
4 | 5 |6|
...0
The Great Code Golf Heist
Alternatively, the most literal cops'n'robbers you'll ever see
king-of-the-hillcops-and-robberspython
Backstory
Sandbox Note: This part will be specific to each thread, so I've provided each version
Robbers
For the last few years, you and your team of robbers have been p...
0
A Portuguese sequence of numbers maths code-golf integer decision-problem
Context
Consider the following sequence of integers:
2, 10, 12, 16, 17, 18, 19, ...
Can you guess the next term? Well, it is 200. What about the next? It is 201... In case it hasn't become obvious to you, this is the sequen...
181
In mathematics an exclamation mark ! often means factorial and it comes after the argument.
In programming an exclamation mark ! often means negation and it comes before the argument.
For this challenge we'll only apply these operations to zero and one.
Factorial
0! = 1
1! = 1
Negation
!0 = 1
!1...
33
Given an input of a string consisting entirely of qs representing quarter
notes and es representing eighth notes, output the indices of the quarter
notes that are syncopated.
Syncopation is complex, but for
the purposes of this challenge, our definition of "syncopated" will be very
simple: a qua...
3
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