Print "N NE E SE S SW W NW"
bash (24 bytes)
using brace expansion
echo N {N,,S}E S {S,,N}W
is the same length as hard coding
echo N NE E SE S SW W NW
however it becomes more interesting when outputing more points of the compass
echo N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW
brace expansion
echo N {{N,,E}N,,{E,,S}S}E S {{S,,W}S,,{W,,N}N}W
otherwise if order could be changed, (17 bytes), the trick is that without quotes the empy string parameter disappears
echo {N,,S}{W,,E}
Mornington Crescent, 4395 3823 bytes
Take Northern Line to Bank
Take District Line to Parsons Green
Take District Line to Paddington
Take Bakerloo Line to North Wembley
Take Bakerloo Line to Charing Cross
Take Bakerloo Line to Charing Cross
Take Bakerloo Line to Charing Cross
Take Bakerloo Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Barbican
Take Circle Line to Bank
Take Circle Line to Aldgate
Take Circle Line to Embankment
Take Bakerloo Line to Charing Cross
Take Bakerloo Line to Charing Cross
Take Bakerloo Line to Charing Cross
Take Bakerloo Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Bayswater
Take Circle Line to Hammersmith
Take Circle Line to Baker Street
Take Circle Line to Bank
Take Circle Line to Embankment
Take Northern Line to Stockwell
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Farringdon
Take Circle Line to Hammersmith
Take Circle Line to Blackfriars
Take Circle Line to Bank
Take Circle Line to Moorgate
Take Northern Line to Waterloo
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Westminster
Take Circle Line to Hammersmith
Take Circle Line to Tower Hill
Take Circle Line to Bank
Take Circle Line to Edgware Road
Take Circle Line to Liverpool Street
Take Central Line to Mile End
Take District Line to Victoria
Take Victoria Line to Seven Sisters
Take Victoria Line to Victoria
Take Circle Line to Victoria
Take District Line to Mile End
Take District Line to Bank
Take Circle Line to Bank
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Charing Cross
Take Northern Line to Bank
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Barbican
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Bayswater
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Baker Street
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Farringdon
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Embankment
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Blackfriars
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Moorgate
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Westminster
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Tower Hill
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Hammersmith
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Aldgate
Take Circle Line to Paddington
Take Circle Line to Paddington
Take Circle Line to Edgware Road
Take Circle Line to Paddington
Take Circle Line to Bank
Take Circle Line to Bank
Take Northern Line to Mornington Crescent
Try it online!
Since it's a bit much to expect you to read all that, let me give a quick overview of my approach. The main idea is to store 3 copies of the characters N,E,S,W at various stations on the Circle line, via Bank - Hammersmith. These characters are constructed from the start of a station name at Charing Cross. Then, construct from the middle of a well-chosen station name using Mile End and Charing Cross, and store it at Bank so that it can be collected at Hammersmith in the concatenation. Finally, concatenate the characters one by one at Paddington, copying them again via Bank - Hammersmith if they are need to be reused later.
I think the current solution is fairly close to optimal with this strategy, at least in terms of number of stations visited: just 2 times I used a station only for transit:
- to get to Seven Sisters (via Victoria station)
- and to get back to Mornington Crescent (via Bank).
All other station visits were, if I didn't forget one, either storing/retrieving something useful or (part of) using the stations ability.
As for the line lengths, I've tried to pick the shortest names on Circle Line, but there may be a minor improvement there. It's possible that storing something on District can shave off a few bytes.
PHP, 19 bytes
N NE E SE S SW W NW
Try it online!
Getting this out of the way. Someone will do it eventually.