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  1. Prepare
  2. Data Structures
  3. Queues
  4. Queue using Two Stacks
  5. Discussions

Queue using Two Stacks

  • jsfmarket
     + 1 comment

    perl:

    while(<>){($c,$v)=split;$c==1?push@q,$v:$c==2?shift@q:$c==3&&print"$q[0]\n"}