A word-and-number arrangement machine, when given an input line of words and numbers, rearranges it in steps. Nothing ever changes place in this machine: in each step it takes the leftmost word it has not already dealt with and writes that word backwards, letter for letter, in the very position where it stands. Numbers are never touched, and the machine stops once every word of the line has been written backwards. Input: 38 tabla 47 sitar 26 veena. Which of the following is Step 2 of the above arrangement?

Question

Accepted Answer

38 albat 47 ratis 26 veena. The words are dealt with from the left. Step 1 turns tabla into albat: 38 albat 47 sitar 26 veena. Step 2 turns sitar into ratis: 38 albat 47 ratis 26 veena, the answer. "38 albat 47 sitar 26 veena" is Step 1, one step short. "38 albat 47 ratis 26 aneev" is Step 3, the last step, one step too far. "38 tabla 47 ratis 26 aneev" works the words from the right-hand end instead of the left.

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