add solution for day 5

data/day_5.txt

@@ -0,0 +1,512 @@
+[N] [G]                     [Q]    
+[H] [B]         [B] [R]     [H]    
+[S] [N]     [Q] [M] [T]     [Z]    
+[J] [T]     [R] [V] [H]     [R] [S]
+[F] [Q]     [W] [T] [V] [J] [V] [M]
+[W] [P] [V] [S] [F] [B] [Q] [J] [H]
+[T] [R] [Q] [B] [D] [D] [B] [N] [N]
+[D] [H] [L] [N] [N] [M] [D] [D] [B]
+ 1   2   3   4   5   6   7   8   9 
+
+move 3 from 1 to 2
+move 1 from 7 to 1
+move 1 from 6 to 5
+move 5 from 5 to 9
+move 2 from 5 to 2
+move 1 from 6 to 8
+move 1 from 5 to 7
+move 5 from 4 to 6
+move 1 from 7 to 6
+move 1 from 2 to 4
+move 5 from 2 to 6
+move 2 from 1 to 5
+move 2 from 1 to 9
+move 16 from 6 to 4
+move 6 from 8 to 3
+move 7 from 2 to 4
+move 5 from 9 to 3
+move 1 from 1 to 4
+move 1 from 1 to 3
+move 3 from 7 to 4
+move 2 from 5 to 4
+move 31 from 4 to 8
+move 22 from 8 to 4
+move 9 from 3 to 6
+move 7 from 9 to 5
+move 4 from 5 to 6
+move 6 from 3 to 2
+move 2 from 6 to 7
+move 5 from 2 to 7
+move 1 from 2 to 4
+move 1 from 7 to 5
+move 4 from 5 to 4
+move 2 from 6 to 9
+move 2 from 4 to 6
+move 7 from 6 to 4
+move 2 from 6 to 1
+move 1 from 6 to 8
+move 8 from 8 to 1
+move 1 from 7 to 6
+move 4 from 1 to 5
+move 9 from 4 to 8
+move 4 from 1 to 7
+move 3 from 5 to 3
+move 2 from 1 to 9
+move 1 from 3 to 2
+move 1 from 9 to 8
+move 1 from 2 to 1
+move 1 from 1 to 8
+move 1 from 5 to 1
+move 2 from 3 to 1
+move 2 from 6 to 9
+move 19 from 4 to 1
+move 4 from 4 to 2
+move 6 from 1 to 4
+move 1 from 2 to 4
+move 4 from 4 to 3
+move 7 from 7 to 3
+move 7 from 8 to 2
+move 2 from 7 to 4
+move 3 from 2 to 1
+move 8 from 8 to 2
+move 3 from 9 to 1
+move 2 from 9 to 1
+move 10 from 2 to 7
+move 4 from 3 to 1
+move 1 from 8 to 3
+move 1 from 4 to 5
+move 1 from 3 to 6
+move 1 from 2 to 1
+move 10 from 1 to 3
+move 1 from 4 to 7
+move 1 from 6 to 4
+move 7 from 3 to 2
+move 5 from 2 to 8
+move 11 from 7 to 2
+move 3 from 4 to 3
+move 1 from 4 to 3
+move 5 from 8 to 9
+move 17 from 2 to 4
+move 11 from 1 to 5
+move 4 from 1 to 3
+move 5 from 9 to 2
+move 4 from 2 to 1
+move 3 from 5 to 7
+move 6 from 5 to 3
+move 1 from 5 to 8
+move 6 from 1 to 8
+move 3 from 8 to 5
+move 1 from 1 to 4
+move 1 from 7 to 2
+move 15 from 3 to 4
+move 1 from 1 to 3
+move 10 from 3 to 9
+move 2 from 7 to 4
+move 1 from 2 to 8
+move 21 from 4 to 9
+move 1 from 2 to 3
+move 1 from 8 to 1
+move 9 from 4 to 2
+move 1 from 1 to 5
+move 5 from 2 to 7
+move 2 from 8 to 5
+move 1 from 8 to 1
+move 2 from 2 to 8
+move 2 from 4 to 9
+move 24 from 9 to 5
+move 3 from 4 to 1
+move 2 from 2 to 5
+move 12 from 5 to 1
+move 10 from 1 to 5
+move 23 from 5 to 6
+move 8 from 9 to 1
+move 3 from 8 to 1
+move 1 from 1 to 2
+move 1 from 3 to 7
+move 11 from 6 to 1
+move 1 from 2 to 4
+move 6 from 6 to 8
+move 4 from 6 to 7
+move 1 from 7 to 3
+move 1 from 3 to 4
+move 23 from 1 to 8
+move 1 from 4 to 2
+move 1 from 2 to 1
+move 1 from 6 to 7
+move 6 from 5 to 3
+move 1 from 7 to 8
+move 1 from 1 to 8
+move 1 from 9 to 3
+move 6 from 7 to 2
+move 3 from 5 to 9
+move 5 from 2 to 3
+move 28 from 8 to 3
+move 4 from 1 to 9
+move 5 from 9 to 5
+move 2 from 8 to 5
+move 1 from 9 to 4
+move 2 from 7 to 5
+move 1 from 4 to 2
+move 1 from 4 to 8
+move 2 from 8 to 3
+move 6 from 5 to 2
+move 1 from 7 to 2
+move 39 from 3 to 2
+move 2 from 3 to 8
+move 1 from 9 to 6
+move 2 from 2 to 9
+move 2 from 9 to 6
+move 1 from 8 to 1
+move 1 from 1 to 6
+move 5 from 6 to 9
+move 2 from 5 to 8
+move 20 from 2 to 4
+move 2 from 4 to 8
+move 2 from 8 to 3
+move 3 from 3 to 1
+move 22 from 2 to 5
+move 2 from 9 to 1
+move 3 from 1 to 7
+move 1 from 2 to 6
+move 1 from 2 to 9
+move 1 from 1 to 8
+move 2 from 7 to 9
+move 1 from 6 to 8
+move 1 from 2 to 7
+move 1 from 1 to 3
+move 1 from 9 to 8
+move 1 from 8 to 5
+move 3 from 8 to 7
+move 3 from 7 to 8
+move 15 from 4 to 1
+move 1 from 4 to 3
+move 10 from 1 to 6
+move 3 from 8 to 1
+move 5 from 9 to 4
+move 7 from 5 to 1
+move 4 from 6 to 3
+move 15 from 5 to 2
+move 4 from 6 to 4
+move 7 from 2 to 1
+move 6 from 4 to 6
+move 1 from 5 to 9
+move 1 from 5 to 7
+move 1 from 3 to 5
+move 11 from 1 to 8
+move 3 from 4 to 6
+move 4 from 1 to 5
+move 1 from 2 to 5
+move 2 from 8 to 3
+move 11 from 6 to 1
+move 1 from 3 to 7
+move 1 from 9 to 8
+move 6 from 5 to 8
+move 3 from 8 to 4
+move 1 from 4 to 5
+move 3 from 3 to 1
+move 9 from 8 to 2
+move 2 from 1 to 5
+move 11 from 2 to 5
+move 1 from 3 to 6
+move 2 from 8 to 5
+move 3 from 4 to 6
+move 1 from 8 to 3
+move 2 from 1 to 9
+move 1 from 3 to 8
+move 16 from 5 to 7
+move 3 from 1 to 6
+move 1 from 3 to 5
+move 1 from 6 to 7
+move 1 from 9 to 4
+move 1 from 5 to 4
+move 1 from 3 to 2
+move 1 from 1 to 2
+move 3 from 4 to 9
+move 1 from 2 to 7
+move 2 from 8 to 3
+move 6 from 2 to 8
+move 11 from 1 to 3
+move 6 from 3 to 1
+move 4 from 3 to 2
+move 2 from 3 to 1
+move 1 from 1 to 3
+move 4 from 8 to 4
+move 4 from 8 to 2
+move 11 from 7 to 2
+move 9 from 7 to 5
+move 1 from 7 to 3
+move 4 from 5 to 7
+move 14 from 2 to 3
+move 17 from 3 to 7
+move 2 from 5 to 2
+move 1 from 5 to 7
+move 1 from 5 to 6
+move 4 from 6 to 7
+move 8 from 1 to 2
+move 2 from 6 to 4
+move 1 from 6 to 8
+move 6 from 4 to 1
+move 1 from 8 to 5
+move 6 from 7 to 8
+move 5 from 8 to 3
+move 12 from 2 to 1
+move 1 from 8 to 4
+move 4 from 3 to 1
+move 4 from 2 to 4
+move 3 from 9 to 3
+move 3 from 3 to 2
+move 1 from 3 to 2
+move 3 from 4 to 1
+move 2 from 5 to 7
+move 22 from 1 to 8
+move 17 from 8 to 6
+move 21 from 7 to 6
+move 3 from 2 to 8
+move 3 from 1 to 5
+move 3 from 5 to 2
+move 2 from 4 to 6
+move 7 from 6 to 5
+move 1 from 9 to 4
+move 14 from 6 to 4
+move 5 from 8 to 3
+move 1 from 6 to 3
+move 3 from 3 to 9
+move 2 from 9 to 1
+move 2 from 7 to 1
+move 16 from 6 to 8
+move 2 from 6 to 7
+move 1 from 2 to 7
+move 1 from 3 to 8
+move 7 from 4 to 1
+move 2 from 7 to 2
+move 4 from 4 to 7
+move 5 from 2 to 4
+move 1 from 7 to 3
+move 3 from 5 to 8
+move 1 from 7 to 5
+move 12 from 1 to 6
+move 3 from 7 to 2
+move 7 from 4 to 2
+move 3 from 3 to 2
+move 1 from 4 to 2
+move 1 from 9 to 8
+move 8 from 6 to 8
+move 12 from 2 to 4
+move 5 from 5 to 2
+move 11 from 4 to 9
+move 3 from 6 to 3
+move 2 from 4 to 2
+move 4 from 2 to 6
+move 5 from 2 to 8
+move 12 from 8 to 4
+move 20 from 8 to 5
+move 13 from 5 to 3
+move 1 from 8 to 5
+move 5 from 5 to 9
+move 16 from 9 to 1
+move 9 from 4 to 5
+move 12 from 3 to 9
+move 5 from 6 to 5
+move 9 from 9 to 7
+move 14 from 1 to 4
+move 14 from 4 to 1
+move 15 from 5 to 7
+move 4 from 8 to 2
+move 3 from 4 to 3
+move 3 from 1 to 8
+move 1 from 5 to 9
+move 1 from 5 to 3
+move 3 from 9 to 8
+move 4 from 3 to 4
+move 1 from 4 to 6
+move 20 from 7 to 2
+move 2 from 3 to 8
+move 3 from 7 to 2
+move 4 from 2 to 1
+move 1 from 6 to 7
+move 3 from 4 to 2
+move 2 from 2 to 3
+move 4 from 3 to 4
+move 1 from 8 to 1
+move 3 from 8 to 1
+move 2 from 7 to 8
+move 1 from 4 to 5
+move 14 from 2 to 5
+move 6 from 1 to 5
+move 1 from 4 to 3
+move 15 from 1 to 4
+move 1 from 8 to 2
+move 1 from 9 to 5
+move 4 from 8 to 7
+move 13 from 5 to 6
+move 1 from 8 to 1
+move 2 from 7 to 9
+move 12 from 6 to 4
+move 1 from 3 to 6
+move 1 from 1 to 6
+move 4 from 5 to 2
+move 5 from 5 to 6
+move 2 from 6 to 2
+move 1 from 7 to 5
+move 2 from 6 to 9
+move 1 from 5 to 9
+move 16 from 2 to 5
+move 17 from 4 to 1
+move 3 from 1 to 3
+move 1 from 2 to 6
+move 2 from 6 to 1
+move 3 from 3 to 1
+move 14 from 1 to 8
+move 3 from 5 to 2
+move 4 from 8 to 2
+move 3 from 4 to 5
+move 15 from 5 to 3
+move 1 from 7 to 6
+move 3 from 1 to 8
+move 2 from 3 to 7
+move 1 from 1 to 2
+move 1 from 7 to 6
+move 4 from 2 to 8
+move 2 from 6 to 2
+move 1 from 7 to 6
+move 3 from 8 to 2
+move 12 from 8 to 6
+move 1 from 5 to 6
+move 3 from 2 to 5
+move 2 from 2 to 5
+move 4 from 6 to 5
+move 4 from 3 to 5
+move 1 from 8 to 4
+move 11 from 6 to 4
+move 6 from 3 to 1
+move 2 from 9 to 8
+move 20 from 4 to 5
+move 1 from 4 to 9
+move 2 from 3 to 8
+move 1 from 3 to 8
+move 17 from 5 to 8
+move 5 from 5 to 9
+move 9 from 5 to 1
+move 2 from 6 to 7
+move 23 from 8 to 2
+move 2 from 7 to 5
+move 3 from 9 to 4
+move 16 from 2 to 4
+move 11 from 1 to 8
+move 4 from 5 to 8
+move 11 from 2 to 6
+move 2 from 6 to 1
+move 5 from 9 to 5
+move 5 from 5 to 6
+move 5 from 8 to 6
+move 1 from 6 to 7
+move 7 from 8 to 1
+move 12 from 1 to 2
+move 1 from 9 to 5
+move 1 from 1 to 3
+move 1 from 1 to 4
+move 1 from 5 to 3
+move 1 from 3 to 6
+move 1 from 8 to 2
+move 18 from 6 to 2
+move 1 from 6 to 2
+move 2 from 8 to 3
+move 3 from 3 to 8
+move 18 from 4 to 9
+move 11 from 9 to 2
+move 2 from 9 to 6
+move 2 from 4 to 1
+move 1 from 1 to 5
+move 1 from 5 to 4
+move 1 from 4 to 8
+move 42 from 2 to 1
+move 3 from 9 to 3
+move 1 from 8 to 1
+move 1 from 3 to 4
+move 3 from 8 to 7
+move 1 from 4 to 1
+move 2 from 3 to 2
+move 17 from 1 to 6
+move 15 from 6 to 3
+move 2 from 9 to 7
+move 1 from 3 to 6
+move 2 from 7 to 6
+move 2 from 2 to 4
+move 1 from 2 to 3
+move 1 from 4 to 9
+move 1 from 4 to 1
+move 1 from 6 to 3
+move 20 from 1 to 9
+move 6 from 1 to 9
+move 7 from 9 to 3
+move 20 from 9 to 1
+move 1 from 6 to 7
+move 2 from 6 to 7
+move 1 from 6 to 5
+move 1 from 6 to 8
+move 4 from 7 to 3
+move 3 from 7 to 2
+move 1 from 6 to 4
+move 1 from 2 to 1
+move 1 from 4 to 9
+move 21 from 3 to 2
+move 5 from 3 to 8
+move 1 from 5 to 1
+move 2 from 8 to 7
+move 4 from 8 to 3
+move 4 from 2 to 5
+move 19 from 2 to 3
+move 1 from 9 to 2
+move 23 from 3 to 2
+move 2 from 7 to 4
+move 3 from 5 to 9
+move 16 from 2 to 1
+move 1 from 5 to 4
+move 1 from 9 to 3
+move 2 from 3 to 8
+move 3 from 4 to 6
+move 1 from 6 to 2
+move 1 from 8 to 6
+move 5 from 2 to 6
+move 7 from 6 to 5
+move 4 from 2 to 6
+move 6 from 5 to 9
+move 1 from 8 to 4
+move 18 from 1 to 9
+move 1 from 5 to 2
+move 9 from 9 to 4
+move 5 from 6 to 3
+move 9 from 4 to 1
+move 4 from 9 to 2
+move 1 from 4 to 8
+move 1 from 8 to 3
+move 7 from 1 to 8
+move 6 from 3 to 2
+move 10 from 2 to 9
+move 21 from 1 to 8
+move 1 from 2 to 8
+move 19 from 8 to 4
+move 1 from 8 to 3
+move 16 from 4 to 8
+move 1 from 4 to 2
+move 2 from 1 to 5
+move 1 from 2 to 3
+move 1 from 4 to 5
+move 1 from 4 to 8
+move 2 from 1 to 3
+move 3 from 3 to 2
+move 5 from 9 to 1
+move 1 from 3 to 4
+move 4 from 9 to 4
+move 2 from 1 to 9
+move 2 from 2 to 5
+move 1 from 2 to 7
+move 3 from 1 to 7
+move 10 from 8 to 6
+move 4 from 8 to 5
+move 3 from 4 to 3
+move 3 from 3 to 4
+move 1 from 9 to 8
+move 2 from 7 to 2
+move 1 from 2 to 1
+move 4 from 9 to 3

src/day_5.jl

@@ -0,0 +1,39 @@
+include(joinpath(readchomp(`git rev-parse --show-toplevel`), "aoc.jl"))
+import .Aoc: @aoc
+
+function parse_input(input)
+    separator = findfirst(==(""), input)
+    num_stacks = length(unique(input[separator-1])) - 1
+    stacks = [ [] for _ in 1:num_stacks ]
+    instructions = [ parse.(Int, [ i.match for i in eachmatch(r"\d+", instr)]) for instr in input[separator+1:end] ]
+    
+    for i in separator-2:-1:1
+        line = input[i]
+        while true
+            col = findlast(isletter, line)
+            (col == nothing) && break
+            index = Int(round(col/4, RoundUp))
+            push!(stacks[index], line[col])
+            line = line[begin:col-2]
+        end
+    end
+    (stacks, instructions)
+end
+
+function solve(λ, input)
+    stacks, instructions = parse_input(input)
+    for (c,f,t) in instructions
+        append!(stacks[t],λ([pop!(stacks[f]) for _ in 1:c ]))
+    end
+    join(map(pop!, stacks))
+end
+
+function p1(input::Vector{String})
+    solve((x) -> x, input)
+end
+
+function p2(input::Vector{String})
+    solve(reverse, input)
+end
+
+@aoc(2022, 5)