Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 17 Jul 2017 My Price 7.00

mixture of stones

1. Why did we put the sentinel at the beginning of the array rather than at the end?

2. (Scholten) The game of Go is played with stones of two colors, black and white. Suppose that you have a can with an unknown mixture of stones and that you execute the following algorithm:

while Stones_Left_in Can loop

Remove_Two_Stones(S1, S2);

if Color(S1) = Color(S2) then

Add_Black_Stone;

else

Add_White_Stone;

end if;

end loop;

Show that the loop terminates by identifying a value which is always decreasing but always non-negative. Can you say anything about the color of the last stone to be removed? (Hint: write a loop invariant on the number of white stones.)

Answers

(5)
Status NEW Posted 17 Jul 2017 09:07 PM My Price 7.00

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