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edited Apr 2, 2020 at 8:47

edited Apr 2, 2020 at 8:47

APL (Dyalog), 11(削除) 11 (削除ここまで) 8 bytes

3 bytes saved thanks to @Bubbler!

'⊃'(|)D'⍳ ̄1∘↑'⍳⌽

 ⌽ reverse the string
⊃ take the last (now first) byte
 '(|)'⍳ index inside '(|)' (if not found ('D') returns the length (3))

'(|)D'⍳ ̄1∘↑

3 bytes saved thanks to @Bubbler!

⊃'(|)'⍳⌽

 ⌽ reverse the string
⊃ take the last (now first) byte
 '(|)'⍳ index inside '(|)' (if not found ('D') returns the length (3))

added 11 characters in body

edited Apr 1, 2020 at 16:50

edited Apr 1, 2020 at 16:50

'(|)D'⍳1∘↓D'⍳ ̄1∘↑

'(|)D'⍳1∘↓

'(|)D'⍳ ̄1∘↑

answered Apr 1, 2020 at 16:33

answered Apr 1, 2020 at 16:33

'(|)D'⍳1∘↓