Assume the input is a 32-bit integer, then the reverse of 1000000003 overflows. How should you handle such cases?For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.我比较认可的做法:...
所以,为了提高大家的算法能力,这个公众号后续每天带大家做一道算法题,题目就从LeetCode上面选 ! 今天和大家聊的问题叫做翻转对,我们先来看题面: leetcode-cn.com/problem Givenanintegerarraynums,returnthenumberofreversepairsinthearray. Areversepairisapair(i,j)where0<=i<j<nums.lengthandnums[i]>2*nums...
public int reverse(int x) { int ret=0; while(x!=0) { int t=x%10; ret=ret*10+t; x=x/10; } return ret; } } publicclassSolution {publicbooleanisPalindrome(intx) {if(x<0)returnfalse;if(x==0)returntrue;intret=0;intxold=x;while(x!=0) {inttemp= x%10;//zui hou yi wei...
leetcode-cn.com/problem By now, you are given a secret signature consisting of character 'D' and 'I'. 'D' represents a decreasing relationship between two numbers, 'I' represents an increasing relationship between two numbers. And our secret signaturewas constructed by a special integer array,...
(c.first%2) //翻转偶数层数据(第2,4,6……层) reverse(c.second.begin(), c.second.end()); res.push_back(c.second); } return res; } void BFS(TreeNode* root,int step){ if (root == NULL) return; m[step].push_back(root->val); BFS(root->left, step + 1); BFS(root->...
Valid Number 11.0% Easy Symmetric Tree 31.6% Easy String to Integer (atoi) 14.2% Easy Same Tree 41.8% Easy Binary Tree Level Order Traversal 30.6% Easy Binary Tree Level Order Traversal II 31.0% Easy Roman to Integer 33.9% Easy Reverse Integer 39.8% Easy Remove Nth Node From End of List...
0007-reverse-integer Clean up repo Jan 21, 2024 0009-palindrome-number Clean up repo Jan 21, 2024 0014-longest-common-prefix Time: 38 ms (55.77%), Space: 16.7 MB (26.00%) - LeetHub Aug 6, 2024 0020-valid-parentheses Clean up repo Jan 21, 2024 ...
Single Number 45.6% Medium Reverse Words in a String 14.0% Medium Simplify Path 19.9% Medium Rotate Image 31.2% Medium Rotate List 22.0% Medium Binary Tree Inorder Traversal 35.5% Medium Set Matrix Zeroes 30.8% Medium Search a 2D Matrix 31.2% Medium Search for a Range 27.4% Medium Search In...
int N; long[] tr; public int reversePairs(int[] nums) { List<Long> ys = new ArrayList(); for(int i: nums) {//离散化 ys.add((long)i); ys.add((long)i * 2); } Collections.sort(ys);//排序 ys = unique(ys);//去重 N = ys.size(); tr = new long[N + 1];//树状数组...
Excel Sheet Column Number 172. Factorial Trailing Zeroes 173. Binary Search Tree Iterator 174. Dungeon Game 179. Largest Number 187. Repeated DNA Sequences 190. Reverse Bits 191. Number of 1 Bits 198. House Robber 199. Binary Tree Right Side View 200. Number of Islands 201. Bitwise AND ...