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Lyxal
Lyxal
07:57
∆ Increment
▽ Decrement
Ṙ range(1, n + 1) [1, n]
Ṛ range(0, n + 1) [0, n]
ṙ range(1, n) [1, n)
ṛ range(0, n) [0, n)
⚁ mod 2
⊡ space string
¢ map but keep original as input
∆Ṙ¢⚁[\||⊡*\/ a 12 byte solution to Alternating triangles
,§$™Ω 5 byte solution to character swapping
§ pairwise map
Ω print all
 
5 hours later…
a'_'
a'_'
12:54
Hmm, the triangle is up-side down, so you need to reverse the range. ∆Ṙ^¢⚁[\||⊡*\/ if we say that ^ also works for lists.

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