回到顶部 非BST的解法 代码源自LeetCode讨论区。利用了java的排序树。 publicclassSolution{ TreeSet<Integer> set =newTreeSet<>();intmin=Integer.MAX_VALUE;publicintgetMinimumDifference(TreeNode root){if(root ==null)returnmin;if(!set.isEmpty()) {if(set.floor(root.val) !=null) { min = Math....
length; i++) { if (window.size() != 0) if (window.floor((long)nums[i]+t) != null && window.floor((long)nums[i]+t) >= (long)nums[i]-t) return true; window.add(new Long(nums[i])); if(i >= k) window.remove(new Long(nums[i-k])); } return false; } }...
Note: There are at least two nodes in this BST. 标签Binary Search Tree 类似题目(E) K-diff Pairs in an Array 思路:迭代后序遍历平衡二叉树,得到左子树的最小绝对值差lmin和左子树最大值maxl,得到右子树的最小绝对值差rmin和右子树最小值minr,然后返回min(lmin,rmin,root.val-maxl,root.val-minr...
C++ 没有 类似于java 的 floor() 或者lower(), 因为C++ 可以反向迭代, 这样lower_bound / upper_bound 可以得到 floor, lower. floor: to find a biggest index i such that A[i] is less than or equal to target Returns the greatest element in this set less than or qual to the given element,...
938-rangesum-of-bst938 Range Sum of BSTProblem: 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 = ...
function mergeSort(array) { if (array.length > 1) { const length = array.length; const mid = Math.floor(length / 2); const left = mergeSort(array.slice(0,mid)); const right = mergeSort(array.slice(mid,length)); array = merge(left,right); } return array; } function merge(left...
(图片来自 https://www.geeksforgeeks.org/floor-in-binary-search-tree-bst/) 另外我们二叉查找树有一个性质是: 其中序遍历的结果是一个有序数组。有时候我们可以利用到这个性质。 相关题目: 98.validate-binary-search-tree 二叉平衡树 平衡树是计算机科学中的一类数据结构,是一种改进的二叉查找树。一般的二...
public class Solution { public boolean containsNearbyAlmostDuplicate(int[] nums, int k, int t) { if (k <= 0 || t < 0) return false; TreeSet<Integer> set = new TreeSet<>(); for (int i = 0; i < nums.length; i++) { int val = nums[i]; if (set.floor(val) != null ...
delete-node-in-a-bst 看子节点的是否为None,分情况讨论 source from:https://leetcode-cn.com/problems/delete-node-in-a-bst/ find-mode-in-binary-search-tree 直接遍历统计 source from:https://leetcode-cn.com/problems/find-mode-in-binary-search-tree/ find-bottom-left-tree-value source ...
A. Floor Number (800) B. Symmetric Matrix (900) C. Increase and Copy (Binary Search+Math) (1100) D. Non-zero Segments (1500) E. Rock, Paper, Scissors (1800) (MAX Flow) F. Number of Subsequences (2000) (Combanation+Math) Codeforces Round #675 (Div. 2) A. A - Fence...