LeetCode 222. Count Complete Tree Nodes complete binary tree:除最后一行外每一行的节点都有两个儿子,最后一行的节点尽可能靠左。 ver0: 1classSolution {2public:3intcountNodes(TreeNode*root) {4if(!root)return0;5return1+ countNodes(root->left) + countNodes(root->right);6}7}; 不出意料地TLE。
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree fromWikipedia: In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h ...
package leetcode func countPrimes(n int) int { isNotPrime := make([]bool, n) for i := 2; i*i < n; i++ { if isNotPrime[i] { continue } for j := i * i; j < n; j = j + i { isNotPrime[j] = true } } count := 0 for i := 2; i < n; i++ { if !is...
A set of practice note, solution, complexity analysis and test bench to leetcode problem set - leetcode/CountSubArrayFixBound.drawio at b58bcceb0ea27d0756ad72fb6a64b3b547fae221 · brianchiang-tw/leetcode
1267-remove-zero-sum-consecutive-nodes-from-linked-list 1268-market-analysis-i 1285-balance-a-binary-search-tree 1292-immediate-food-delivery-ii 1293-three-consecutive-odds 1298-reverse-substrings-between-each-pair-of-parentheses 1301-reformat-department-table 1302-delete-characters-to-make-fancy-str...
828. Count Unique Characters of All Substrings of a Given String # 题目 # Let’s define a function countUniqueChars(s) that returns the number of unique characters on s, for example if s = "LEETCODE" then "L", "T","C","O","D" are the unique characters
My Solutions to Leetcode problems. All solutions support C++ language, some support Java and Python. Multiple solutions will be given by most problems. Enjoy:) 我的Leetcode解答。所有的问题都支持C++语言,一部分问题支持Java语言。近乎所有问题都会提供多个算