That's a little oversimplified. In the case of 1 2 2 1, 2 is a local maximum. In 3 2 2 3, 2 is a local minimum. In 1 2 2 3, it's neither. You can't tell them apart just looking at the adjacent elements.

In reply to Re^2: finding local minima/maxima for a discrete array by ysth
in thread finding local minima/maxima for a discrete array by Anonymous Monk

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