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</html><description>Coding tests often include problems related to data structures and algorithms. In particular, problems related to identifying friendships are related to graph theory, and many companies use these problems to evaluate candidates&#x2019; logical thinking and coding skills. Problem Description The algorithm problem for identifying friendships is as follows. Problem: Friend Relationship Exploration Given the number &hellip; &#xB354; &#xBCF4;&#xAE30; ""</description></oembed>
