An Euler tour of a directed graph G with n vertices and m edges is a cycle

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An Euler tour of a directed graph G with n vertices and m edges is a cycle that traverses each edge of G exactly once according to its direction. Such a tour always exists if G is connected and the in-degree equals the out-degree of each vertex in G. Describe an O(n+m)-time algorithm for finding an Euler tour of such a directed graph G.

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Data Structures and Algorithms in Java

ISBN: 978-1118771334

6th edition

Authors: Michael T. Goodrich, Roberto Tamassia, Michael H. Goldwasser

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