Flipping between two values using a for loop

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Michael Doherty
Michael Doherty 2016-10-4
评论： Star Strider 2016-10-5
I'm trying to figure out how to make this switch between -1 and 1. If I set p to -1, I still get it alternating between 0 and 1.
The actual question is as follows:
Have a for loop flip the value of p between -1 and 1, changing it once each loop iteration USING A SINGLE LINE OF CODE. Display the value of p each iteration by omission of semicolon. Use the pause() function to stop the loop temporarily each iteration.
clc;
clear;
p = -1;
for k = 1 : 10
p = ~p
pause(1);
end
Any suggestions would be greatly appreciated!

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采纳的回答

Star Strider
Star Strider 2016-10-4
Try this:
d = -1;
for k = 1 : 10
p = d^k
pause(1);
end
or you could simplify it further as:
for k = 1 : 10
p = (-1)^k
pause(1);
end

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