List of C # go heavy



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Duplicate data in list

Method One: The data in the list is stored in the Haset, and the automatic deduplication

hashset<treenode> t = new hashset<treenode> (checkedlist);

New HashSet The list of previously duplicated data in

Method Two: Take each item in the list and compare it to all the items in the list

Method Three: Take out each item in the list find to see if there is a new list, not put in, there is ...

List of C # go heavy