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→Representations 表达式
* <code>set_edge_value</code>(''G'', ''x'', ''y'', ''v''): sets the value associated with the edge (''x'', ''y'') to ''v''.
* <code>set_edge_value</code>(''G'', ''x'', ''y'', ''v''): sets the value associated with the edge (''x'', ''y'') to ''v''.
==Representations 表达式==
==Representations 表示==
Different data structures for the representation of graphs are used in practice:
Different data structures for the representation of graphs are used in practice: