Intertwined Polyglot
polyglot code-golf
Write a program which when executed as language A, produces a different program in language B, which in turn produces the name of language A. And the other way round (B to A to B).
Rules
The produced programs must be unique both from each other, and f...
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Challenge
Here at PPCG, we sure do like our sequences, so here's a fun another one.
Let's define a(n) as being the smallest non-negative integer X such that a(k) is not X with 0 < k < n, and a(n-1) and X do not share any decimal digits. a(0) = 0
Given an input n > 0, output such a(n).
For exa...
Running second maximum of a list
Given a list of integers, your task is to output the second largest value in the first k elements, for each k.
You can output an arbitrary value for the first element, or simply omit this value, as there isn't a second maximum for a list of 1 element. You may as...
This is an answer chaining question that uses sequences from OEIS, and the length of the previous submission.
This answer chaining question will work in the following way:
I will post the first answer. All other solutions must stem from that.
The next user (let's call them userA) will find the...
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In this challenge, you must take a string matching the regex ^[a-zA-Z]+$ or whatever is reasonable (you don't have to consider uppercase or lowercase letters if you want) (you may assume the string is long enough, and has the right structure for all the operations), and output another string, pro...
