nintendooooo

nintendoooo5.rb

#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

A = [100, '*', 20, '+', 29, '+', 10, '*', 20, '+', 1, '*', 3, '+', 1, '+', 3, '*', 2]
ANS=7005

N = A.size

def rep(i, j, a)
  a.insert(i, '(')
  a.insert(j+2, ')')
  a[i..(j+2)]=eval(a[i..(j+2)].join(''))

  if eval(a.join('')) == ANS
    puts '答えはっけん'
    return
  else
    n = a.size
    (0..(n-1)).each do |ni|
      next if ni % 2 != 0 

      ((ni+2)..n).each do |nj|
        next if nj % 2 != 0 
        return rep ni, nj, a.dup

      end
    end
  end
end

(0..(N-1)).each do |n|
  next if n % 2 != 0 
  ((n+2)..N).each do |m|
    next if m % 2 != 0 
    rep n, m, A.dup
  end
end