Top new questions this week:
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The 2020-05-29 xkcd comic showed us the numbers that Randall Munroe feels would be most likely to result from multiplication, other than the correct answers. The table does seem to have some sort of ...
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Overview
The cover of a book will be provided in the following ASCII format:
______
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------
The input can be in any reasonable format (eg. a list of strings, a nested ...
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Write two programs, each taking a string s and a number n ≥ 0, such that:
The first program prints s n times, separated by newlines.
The second program prints each character of s n times, with ...
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We all know true and false, but what do speakers around the globe say?
+----------------------+------------+------------+
| Language | True | False |
...
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Background
Define a run in a list as a maximal contiguous subsequence of identical values. For example, the list
0 0 0 1 1 0 3 3 3 2 2
has five runs of lengths 3, 2, 1, 3, 2 respectively. (Think ...
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You will be given two integers \$M\$ and \$N\$. Find the number of pairs \$(x,y)\$ such that \$1 \le x \le M\$, \$1 \le y \le N\$ and \$(x+y)\mod5 = 0\$.
For example, if \$M = 6\$ and \$N = 12\$, ...
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Background
My user ID is 78410, or \$1 0 0 1 1 0 0 1 0 0 1 0 0 1 0 1 0_2\$. One interesting property of this number is that, in binary,
it doesn't have three consecutive identical digits, and yet
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Greatest hits from previous weeks:
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Hold up..... this isn't trolling.
Background
These days on YouTube, comment sections are littered with such patterns:
S
St
Str
Stri
Strin
String
Strin
Stri
Str
St
S
where String is a mere ...
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Your favourite programming language has just had a birthday. Be nice and sing it the Happy Birthday song.
Of course you should accomplish this by writing a program in that language.
The program takes ...
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How far should I sum?
The harmonic series is the "infinite sum" of all the fractions of the form \$\frac1n\$ for \$n\$ positive integer. I.e. the harmonic series is
$$\frac11 + \frac12 + \frac13 + ...
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I want to be down with the kids of the 1990's and start speaking this L33T speak of their's.
For any given input I would like the resulting L33T speech as an output.
I don't want to go to far down ...
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A time in the format hhMMss is represented by six numbers in the range 0..9 (e.g.100203 for 3 seconds after 2 minutes after 10am (10:02.03), or 155603 for three seconds after 56 minutes after 3pm ...
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This year's UEFA Euro 2016 is over and besides a couple of negative headlines there has been a very positive surprise as well – the Iceland national football team. Let's draw their national flag.
...
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Write the shortest code you can that produces an infinite output.
That's all. You code will only be disqualified if it stops producing output at some point. As always in code golf, the shortest code ...
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Can you answer this question?
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The riddle
In yesterday's newspaper, I found a puzzle in which a Rook should start in the lower-left corner of a 12x12 checkerboard and then, during a round trip, visit each field exactly once except ...
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