In a perfect shuffle a deck of cards is divided exactly in half, which are interleaved alternately together. This can be done two ways: In an in-shuffle the bottom half is interleaved on top (1234 5678 → 51627384) and in an out-shuffle the top half is interleaved on top (1234 5678 → 15263748). Take an ordinary deck of 52 cards and sort it into a recognizable order. Do consecutive out-shuffles for the deck and observe how the order changes (alternatively, if you feel more agile, write a computer program that simulates the shuffling). What happens eventually

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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In a perfect shuffle a deck of cards is divided exactly in half, which are interleaved
alternately together. This can be done two ways: In an in-shuffle the bottom half is
interleaved on top (1234 5678 → 51627384) and in an out-shuffle the top half is
interleaved on top (1234 5678 → 15263748).
Take an ordinary deck of 52 cards and sort it into a recognizable order. Do consecutive
out-shuffles for the deck and observe how the order changes (alternatively, if you feel
more agile, write a computer program that simulates the shuffling). What happens
eventually

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