Need help creating the code and graph only.

Answering questions a, d, e, f, g, h using The R program coding. How?

https://www.dropbox.com/s/jltc0ct99zcbzdi/22603_2479228_R_igraph.html?dl=0

Construct and plot the network using the igraph package and the adjacency list you wrote. http://igraph.org/redirect.html

To assign vertex names you can write it as

g = graph(edges = c("a", "b", "b", "c"), directed = FALSE)

or

g = graph(edges = c(1, 2, 2, 3), directed = FALSE)

V(g)$name = c("a", "b", "c")

1. Answer the following questions about this graph. a. What is the degree distribution for th graph? b. What is the density of this graph? c. Draw the 1.5 egocentric network of node G. d. Which node(s) have the highest degree? What is the degree? e. Which node(s) have the lowest degree? What is the degree? f. Which node has the highest closeness centrality? g. Which node has the highest degree centrality? h. What is the centralization (based on degree) of the graph