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update3 #47

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update3 #47

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3 changes: 3 additions & 0 deletions README.md
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Expand Up @@ -140,4 +140,7 @@ class Graph {

Dijkstra doesn’t work for Graphs with negative weight edges, Bellman-Ford works for such graphs.

A Graph is a non-linear data structure consisting of nodes and edges. The nodes are sometimes also referred to as vertices and the edges are lines or arcs that connect any two nodes in the graph.
Graphs are used to solve many real-life problems. Graphs are used to represent networks. The networks may include paths in a city or telephone network or circuit network. Graphs are also used in social networks like linkedIn, Facebook. For example, in Facebook, each person is represented with a vertex(or node). Each node is a structure and contains information like person id, name, gender, locale etc.