An undirected graph: 0 <--> 1 4 1 <--> 0 4 2 <--> 5 3 <--> 4 <--> 1 0 5 <--> 2 representative[0] = 1 representative[1] = 1 representative[2] = 5 representative[3] = 3 representative[4] = 1 representative[5] = 5 component 0 contains: 1 4 0 component 1 contains: 3 component 2 contains: 5 2
