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Binary Tree Level Order Traversal

时间:2015-05-17 18:10:38      阅读:92      评论:0      收藏:0      [点我收藏+]

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class Solution {
public:
    vector > res;
public:
    void trval(TreeNode *root,int level)
    {
        if(root==NULL)
            return;
       if(level==res.size())
       {
           vector v;
           res.push_back(v);
       }
       res[level].push_back(root->val);
       trval(root->left,level+1);
       trval(root->right,level+1);
    }
    vector > levelOrder(TreeNode *root) {
        
        trval(root,0);
        return res;
      
        
    }
};

Binary Tree Level Order Traversal

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原文地址:http://www.cnblogs.com/qiaozhoulin/p/4509910.html

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