Fun Little Puzzle
Switch branches/tags
Nothing to show
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.

Obtaining ordering of cards

Problem Description

You are given a deck containing n cards. While holding the deck:

  1. Take the top card off the deck and set it on the table
  2. Take the next card off the top and put it on the bottom of the deck in your hand.
  3. Continue steps 1 and 2 until all cards are on the table. This is a round.
  4. Pick up the deck from the table and repeat steps 1-3 until the deck is in the original order.

Write a program to determine how many rounds it will take to put a deck back into the original order.