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There was a challenge to convert a number to its numeral in English, but that was too straightforward. Given a number 0–100, your task is to output the corresponding numeral in French. The French nume …

Consider the following standard 15×15 crossword puzzle grid. We can represent this in ASCII art by using # for blocks and (space) for white squares. # # # # # …

CJam, 21 bytes 1q{i2b7Te[}%e__(;.^); Try it online! Explanation Showing the stack with a sample input of 5: 1 q e# Push 1 and then the whole input: 1 "5" { i e# Convert to its char c …

You may remember in first or second grade using expanded form to learn about place value of numbers. It's easier to explain with an example, so consider the number 123. In expanded form it is represen …

You want to make a string where the (1-indexed) character at index n is n. When n is less than 10, this is easy: "123456789". When n is 12, for example, it becomes impossible, since numbers greater th …

CJam, 11 bytes liq_,@\b\f= Try it online! Takes input as the number, then a newline, then the characters in the ASCII art. Explanation li e# Read the first line and convert it to an int …

Retina, 3 bytes s`. Try it online! This isn't even technically a built-in function, but it is a central feature of the language: counting matches of a regular expression, in this case . (wildcard …

JavaScript (Node.js), 57 bytes a=>n=>a.map(e=>e[1]&&a.push(...[...e].reverse()))&&a[n-1] Try it online! This is an anonymous, curried function. Run it with ( function code )(clipboard)(n) Expla …

Octave, 24 bytes @(a,i)@(n)a(a(:,i)==n,:) Try it online! This creates an anonymous function that returns a matrix whose rows match the criteria. Octave indexes arrays at 1, not zero, and rows of …

JavaScript (Node.js), 29 bytes a=>i=>n=>a.filter(e=>e[i]==n) Try it online! Updated now that I realize the loose output requirements. This uses currying as a golfing technique, and it also retur …

JavaScript (Node.js), 98 bytes a=>m=>(r=[],b=[],a.map((e,i)=>e<a[--i]?(b[p](m+e),r[p](b),b=[a[i]-m,e]):b[p='push'](e)),r[p](b),r) Try it online! This is quite a bit longer than the other JS answe …

CJam, 30 29 bytes {mFz~)-!\__W=,\0=>\-:mp1#W=&} Try it online! My first answer after a nearly 2(!)-year break, so it can probably be golfed more. This is a block that takes input as an integer (ca …

JavaScript ES6, 210 208 202 bytes s=>` 0 8(213)9 4(6)5 (7)`.replace(/\d/g,p=>`_===_1 ___ .....1 _ /_\\1 ___ (_*_)1,1.1_11.1o101-1.1o101-1<11/11>11\\11 : 1] [1> <1 1 : 1" "1___1 11\\11 11/11 …

Sesos, 3 bytes The code contains two unprintable characters, so here is a hexdump: 0000000: a85a0d .Z. Try it online! (Note that this uses the assembly c …

CSS, 132 116 115 bytes a:not(:last-child):nth-child(n+2):after,a:nth-last-child(n+3):after{content:","}a+:last-child:before{content:"and " <p> <a>one</a> </p> <p> <a>one</a> <a>two</a …