摘要： 1. check children is null or not. 阅读全文

摘要： 1 class TrieNode { 2 // Initialize your data structure here. 3 TrieNode[] children = new TrieNode[26]; 4 boolean isWord; 5 public TrieNode() { 6 } 7 } 8 9 public class T... 阅读全文