* Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */classSolution{public:voidtraversal(TreeNode* root,intx,inty, vector<PPR>& res){if(root !=NULL){ res....
原题链接在这里:https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/ 题目: Given a binary tree, return thevertical ordertraversal of its nodes values. For each node at position(X, Y), its left and right children respectively will be at positions(X-1, Y-1)and(X+1,...
Binary Tree Vertical Order Traversal https://leetcode.com/problems/binary-tree-vertical-order-traversal/ 这道题让我们竖直的遍历树,和按层遍历非常相似。我第一次做的时候,使用的是递归的形式,发现顺序会出错。 因此还是要借助按层遍历的思路,将树逐层的加入一个队列,然后再取出来进行处理。 遍历的时候,...
[LeetCode] 314. Binary Tree Vertical Order Traversal Given therootof a binary tree, returnthe vertical order traversal of its nodes' values. (i.e., from top to bottom, column by column). If two nodes are in the same row and column, the order should be from left to right. Example 1...
Given a binary tree, return the vertical order traversal of its nodes' values. (ie, from top to bottom, column by column). If two nodes are in the same row and column, the order should be from left to right. Examples 1: Input: [3,9,20,null,null,15,7] ...
1//Print a Binary Tree in Vertical Order2staticintmin;3staticintmax;4staticHashMap<Integer,ArrayList>map;56publicstaticvoidgenerate(TreeNode root, Integer dis){7if(root ==null)return;8else{9if(map.containsKey(dis)) map.get(dis).add(root.val);10else{11ArrayList<Integer> tmp =newArrayList<...
内层的映射是y值和一个放结点值的 TreeSet,之所以使用 TreeSet 也是利用其可以自动排序的特点,因为当y值相同时,需要结点值从小到大排列(但是后来 LeetCode 加了新的 test case [3,1,4,0,2,2],使得同一个y值时可能有相同的结点值,这样就不能用 TreeSet 了,因为其会自动去重复,这里还是用 vector)。同...
链接:https://leetcode.cn/problems/vertical-order-traversal-of-a-binary-tree 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 思路 题意跟 314 题非常像,但是 314 只要求我们找到横坐标一样的元素,把他们合成一组;但是这个题的题目描述写的非常不清楚,根据 test case,实际的要求是 ...
Leetcode-987 Vertical Order Traversal of a Binary Tree(二叉树的垂序遍历) 水过去了(发出了混子的声音 1#definepb push_back2classSolution3{4public:5vector<vector<int> > verticalTraversal(TreeNode*root)6{78vector<vector<int>>rnt;9if(!root)10returnrnt;1112vector<vector<vector<int>>> v(1000,...
https://github.com/grandyang/leetcode/issues/314 类似题目: Binary Tree Level Order Traversal 参考资料: https://leetcode.com/problems/binary-tree-vertical-order-traversal/ https://leetcode.com/problems/binary-tree-vertical-order-traversal/discuss/76401/5ms-Java-Clean-Solution ...