Is how can I calculate how many transitions are inside an array?

Let’s assume that we have an array of 582 elements. Some of them are above 4 and some of them are below 1,let’s also say that values who are above 4 are equal to True (1) and the values below 1 are equal to False (0). The question is how can I calculate how many transitions are inside the array from 1 to 0?How many peaks I have? Can please someone suggest a code solution for that?
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If you only care about actual transitions and not the type of them, I'm a fan of the simple XOR.
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Attachments:
Count Transitions.png ‏19 KB

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