Day 2: Red-Nosed Reports

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[-] mykl@lemmy.world 5 points 2 weeks ago* (last edited 2 weeks ago)

Uiua

Uiua is still developing very quickly, and this code uses the experimental tuples function, hence the initial directive.

Try it Live!

# Experimental!
"7 6 4 2 1\n1 2 7 8 9\n9 7 6 2 1\n1 3 2 4 5\n8 6 4 4 1\n1 3 6 7 9"
⊜(⊜⋕⊸≠@\s)⊸≠@\n # Partition at \n, then at space, parse ints.

IsSorted ← +⊃(≍⇌⍆.|≍⍆.)        # Compare with sorted array.
IsSmall  ← /××⊃(>0|<4)⌵↘¯1-↻1. # Copy offset by 1, check diffs.
IsSafe   ← ×⊃IsSmall IsSorted  # Safe if Small steps and Ordered.
IsSafer  ← ±/+≡IsSafe ⧅<-1⧻.   # Choose 4 from 5, check again.

&p/+≡IsSafe .            # Part1 : Is each row safe?
&p/+≡(±+⊃IsSafe IsSafer) # Part2 : Is it safe or safer?

[-] VegOwOtenks@lemmy.world 7 points 2 weeks ago

How do you write this, not conceptually but physically. Do you have a char picker open at all times?

[-] mykl@lemmy.world 4 points 2 weeks ago

Haha, you can do it that way, in fact the online Uiua Pad editor has all the operators listed along the top.

But all the operators have ascii names, so you can type e.g. IsSmall = reduce mul mul fork(>0|<4) abs drop neg 1 - rot 1 dup and the formatter will reduce that to IsSmall ← /××⊃(>0|<4)⌵↘¯1-↻1. whenever you save or execute code.

That works in the Pad, and you can enable similar functionality in other editors.

[-] Rin@lemm.ee 2 points 2 weeks ago

i can only imagine doing it with a drawing tablet

[-] popcar2@programming.dev 4 points 2 weeks ago

I like to assume people using array programming languages just have a crystal ball that they use to call upon magic runes on the screen

[-] Leavingoldhabits@lemmy.world 2 points 2 weeks ago

This looks so alien! Does it work with the full set? The comment says 5, choose 4, but I guess it’s written as n, choose n-1?

this post was submitted on 02 Dec 2024

39 points (97.6% liked)

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