Added surfaceAreaPyramid_v4 with improved comments and validation#6896

MarkusRoyikTurner wants to merge 2 commits intoTheAlgorithms:masterTheAlgorithms/Java:masterfrom

MarkusRoyikTurner:feature/surfaceAreaPyramid_v4MarkusRoyikTurner/Java:feature/surfaceAreaPyramid_v4Copy head branch name to clipboard