[2020][ruby][23.1]

pull/2/head
Alpha Chen 4 years ago
parent 5bcd40bef6
commit 45212a6916

@ -0,0 +1,31 @@
cups = ARGF.read.chars.map(&:to_i)
cups_range = Range.new(*cups.minmax)
current = 0
100.times do
current_value = cups.fetch(current % cups.size)
pickup_indices = 3.times.map {|i| (current + i + 1) % cups.size }
pickup = cups.values_at(*pickup_indices)
pickup_indices.sort.reverse.each do |i|
cups.delete_at(i)
end
dest_value = current_value - 1
until cups_range.cover?(dest_value) && !pickup.include?(dest_value)
dest_value -= 1
dest_value = cups_range.end unless cups_range.cover?(dest_value)
end
dest_index = cups.index(dest_value)
cups.insert(dest_index+1, *pickup)
current = cups.index(current_value)
current += 1
current %= cups.size
end
i = cups.index(1)
p (cups[i+1..-1] + cups[0...i]).join
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