Day 5 solution.

jayfoad · Dec 5, 2018 · a4965af · a4965af
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diff --git a/p5.dyalog b/p5.dyalog
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+p←⊃⊃⎕NGET'p5.txt'1
+lcase←819⌶
+f←(1↓∊'|',¨(⊢,⌽¨)⎕A,¨lcase ⎕A)⎕R''⍣≡
+≢q←f p ⍝ part 1
+⌊/{≢f q~⍵,lcase ⍵}¨⎕A ⍝ part 2