Val { ans += rangeSumBST(root.Left, low, high) } // 如果 root 结点值小于 high ,则其右子树可能存在需要统计的结点,递归处理右子树 if root.Val < high { ans += rangeSumBST(root.Right, low, high) } return ans } 题目链接: Range Sum of BST: leetcode.com/problems/r 二叉搜索树的...
return root->val + rangeSumBST(root->left,L,R) + rangeSumBST(root->right,L,R); } }; Github 同步地址: https://github.com/grandyang/leetcode/issues/938 参考资料: https://leetcode.com/problems/range-sum-of-bst/ https://leetcode.com/problems/range-sum-of-bst/discuss/205181/Java-4-...
public int rangeSumBST(TreeNode root, int L, int R) { if (root == null) { return 0; } if (root.val >= L && root.val <= R) { sum += root.val; rangeSumBST(root.left, L, R); rangeSumBST(root.right, L, R); } else if (root.val < L) { rangeSumBST(root.right, L...
10classSolution{ public: int rangeSumBST(TreeNode*root,intL,intR) { if(!root) return 0; if(root->val<L) return rangeSumBST(root->right,L,R); if(root->val>R) return rangeSumBST(root->left,L,R); return root->val + rangeSumBST(root->left,L,root->val) + rangeSumBST(root->r...
leetcode 938. 二叉搜索树的范围和(Range Sum of BST) 目录 题目描述: 示例1: 示例2: 解法: 题目描述: 给定二叉搜索树的根结点 root,返回 L 和R(含)之间的所有结点的值的和。 二叉搜索树保证具有唯一的值。 示例1: 输入:root = [10,5,15,3,7,null,18], L = 7, R = 15 输出:32 示例2: ...
[LeetCode] 938. Range Sum of BST Given the root node of a binary search tree and two integers low and high, return the sum of values of all nodes with a value in the inclusive range [low, high]. Example 1: Input: root = [10,5,15,3,7,null,18], low = 7, high = 15...
sum += root->val; }inOrder(root->right, L, R, sum); } 更好的做法是利用BST的性质减少一部分路径的遍历,贴上leetcode上的代码 如果遍历的当前节点的val在L和R之间,递归加上该节点的两个子节点的值 当前节点的val>L&&val>R,递归加上该节点的左节点的值 ...
Leetcode 938. Range Sum of BST importfunctools#Definition for a binary tree node.#class TreeNode(object):#def __init__(self, x):#self.val = x#self.left = None#self.right = None@functools.lru_cache()classSolution(object):defrangeSumBST(self, root, L, R):""":type root: TreeNode...
[leetcode] 938. Range Sum of BST Description Given the root node of a binary search tree, return the sum of values of all nodes with value between L and R (inclusive). The binary search tree is guaranteed to have unique values.
https://leetcode-cn.com/problems/range-sum-of-bst/ 二叉树中序遍历 二叉搜索树性质:一个节点大于所有其左子树的节点,小于其所有右子树的节点 1/**2* Definition for a binary tree node.3* public class TreeNode {4* int val;5* TreeNode left;6* TreeNode right;7* TreeNode(int x) { val =...