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View Compilation Error

0_0_29019192_10322\Main.java:6: 错误: 方法声明无效; 需要返回类型
    public TrieNode(char ch, int freqs, Map<Character, TrieNode> nodeMap) {
           ^
0_0_29019192_10322\Main.java:15: 错误: 方法声明无效; 需要返回类型
    public TrieTree(){
           ^
2 个错误


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