最大树定义:一个树,其中每个节点的值都大于其子树中的任何其他值。 给出最大树的根节点root。 就像之前的问题那样,给定的树是从表 A(root = Construct(A))递归地使用下述 Construct(A) 例程构造的: 如果A 为空,返回null 否则,令 A[i] 作为 A 的最大元素。创建一个值为 A[i] 的根节点 root root的...
Given a n-ary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. Nary-Tree input serialization is represented in their level order traversal, each group of children is separated by the null value...
Breadcrumbs leetcode-solutions /cpp / 2542-maximum-subsequence-score.cpp Latest commit mainframer Create 2542-maximum-subsequence-score.cpp 235cea9· Jul 17, 2023 HistoryHistory File metadata and controls Code Blame 38 lines (32 loc) · 1.05 KB Raw // Time: O(NlogN) // Space: O(N) cla...
Given a non-empty array of integers, return the third maximum number in this array. If it does not exist, return the maximum number. The time complexity must be in O(n). Example 1: Input: [3, 2, 1] Output: 1 Explanation: The third maximum is 1. Example 2: Input: [1, 2] Out...
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any two numbers that are in the same bucket cannot be the answer. Thus, we only need to store the largest number and the smallest number in each bucket. Then, we can scan the buckets sequentially and get a sorted list. The maximum difference between two consecutive elements is the answer...
Given an integer array, find three numbers whose product is maximum and output the maximum product. Example 1: Input: [1,2,3] Output: 6 Example 2: Input: [1,2,3,4] Output: 24 Note: The length of the given array will be in range [3,104] and all elements are in the range [-...
https://discuss.leetcode.com/topic/63903/short-easy-c-using-set classSolution{public:intthirdMax(vector<int>& nums){ set<int>top3;for(intnum : nums){ top3.insert(num);if(top3.size() >3)top3.erase(top3.begin()); }returntop3.size() ==3? *top3.begin() : *top3.rbegin();...