How can I generate random integers from 0 - 4 in such a way that the same number is not generated twice consecutively? For example, if 3 is the number that is generated the first time then 0,1,2,4 will be the possible numbers for random generation the second time. If 2 is generated the second time then 0,1,3,4 will be the possible numbers for random generation the third time and so on.

objective-c random
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