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1 选了算法题课程表II,理解了有向图,无向图,带权无向图,在实际应用中 邻接表表示法应用的比较多。在写算法的过程中,参数正好是0到N,和数组的索引 正好一致,参数正好和索引下标一一对应,用的很巧妙。图的环形检测,用一个节点不会重复走, 来判断。
2 DFS算法找了一道简单的,用了递归处理。