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1. Let G be an undirected graph with n vertices and m edges. Describe an O(n+m)- time algorithm…

1. Let G be an undirected graph with n vertices and m edges. Describe an O(n+m)- time algorithm…

1. Let G be an undirected graph with n vertices and m edges. Describe an O(n+m)- time algorithm for traversing each edge of G exactly once in each direction.2. Implement an algorithm that returns a cycle in a directed graph  , if one exists.