I like this one

Evacuate the city, engage all defences and get this man a medal

this is literally not the purpose of this ex I guess

is this kata too old ? don't know why it's 5 kyu

nice one

I'm afraid there is no link as you wanted, just think simple, code simple. Other authors and I just use basic datatypes to solve this one

interesting and good to see
but note that your solution is not as fast & secure as built-in module

you passed the simple test, not ALL
NOTE: There will also be lists tested of lengths upwards of 10,000,000 elements. Be sure your code doesn't time out.
this kata requires O(n) solution, try to use a better way.
Hint for python guys, if you are already use for each, don't use operator "in" or "not in" inside
good luck

yes

omg this kata completely opens my mind, very nice one

tks, good to know

omg this confused me so much

lmao