Single Tree Center Problem e Step1: Choose anyx∈G G is a tree. e. i=1. 2.m and find the end vertex are the end vertices say eN, farthest from xSingle Tree Center Problem eN Step 1: Choose any and find the end vertex, say eN, farthest from x. x ∈ G G is a tree. ei, i=1,2,..., m are the end vertices. x