如果十以内的就直接返回true。 classSolution {private://leetcode9longlongreverseInt(intx) {longlongresult =0;while(x) { result= result *10+ x%10; x/=10; }returnresult; }public://no extra spaceboolisPalindrome(intx) {if(x <0)returnfalse;if(x <10)returntrue;if(reverseInt(x) ==x)returntrue;elsereturnfalse; } };
leetcode problem 9: Palindrome Number classSolution {public:boolisPalindrome(intx) {intret =0;while(x >ret){intremainder = x %10;if(remainder ==0&& ret ==0){returnfalse; } ret*=10; ret+=remainder;if(x ==ret){returntrue; } x/=10; }if(x ==ret){returntrue; }returnfalse; } ...
AI代码解释 classSolution{private:vector<pair<int,int>>freq;vector<vector<int>>ans;vector<int>sequence;public:voiddfs(int pos,int rest){if(rest==0){ans.push_back(sequence);return;}if(pos==freq.size()||rest<freq[pos].first){return;// 两种情况结束递归:已经遍历结束,和rest已经小于下一个...
solution feat: add solutions to lc problem: No.2434 (#4465) Jun 6, 2025 .clang-format style: update format options Sep 6, 2022 .editorconfig chore: add configuration file .editorconfig (#3336) Jul 31, 2024 .gitignore chore: update .gitignore Apr 26, 2025 ...
push(dest_node); distance[dest_node] = distance[cur_node] + 1; if(distance[dest_node] > max_distance){ max_distance = distance[dest_node]; } } } } return max_distance; } }; class Solution { public: vector<int> findMinHeightTrees(int n, vector<vector<int>>& edges) { if(n==...
给定一个仅包含数字 2-9 的字符串,返回所有它能表示的字母组合。答案可以按 任意顺序 返回。 给出数字到字母的映射如下(与电话按键相同)。注意 1 不对应任何字母。 示例1: 输入:digits = "23" 输出:["ad","ae","af","bd","be","bf","cd","ce","cf"] 示例2: 输入:digits = "" 输出:[]...
Leetcode - Practice Problem 751.IP to CIDR 我请问呢什么题目啊在这里考二进制呢。。。首先我们要会怎样用python 把十进制和二进制互相转换 >>> int("1111", 2) # convert binary to int >>> 15 >>> format(15, '08b') # convert int 15 to binary in 8-bit representation...
#TitleSolutionDifficulty 1 Search in a big sorted array Java Medium 2 Search Range in Binary Search Tree Java MediumAbout LeetCode Problems' Solutions Resources Readme Activity Stars 17.8k stars Watchers 985 watching Forks 4.9k forks Report repository Releases No releases published ...
6. Visualize the Problem 6. 将问题可视化Draw diagrams to visualize the linked list and the ...
(,, ): HDU 1542 Atlantis update: query: HDU 1828 Picture update: query: Title Solution Difficulty Time Space O(n log 218. The Skyline Problem Go Hard O(n) n) 307. Range Sum Query - Go Hard O(1) O(n) Mutable 315. Count of Smaller O(n log Go Hard O(n) Numbers After Self ...