Empty cells are indicated by the character'.'. A sudoku puzzle... ...and its solution numbers marked in red. Note: The given board contain only digits1-9and the character'.'. You may assume that the given Sudoku puzzle will have a single unique solution. The given board size is alway...
比较简洁,没有涉及到将整型转化为字符串,所以也不用特别处理正负的问题。class Solution { public: int reverse(int x) { int result=0; do{if((result>214748364)||(result<-214748364)) return 0; result*=10; result+=(x%10); }while(x=x/10); return result; ...
Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Input: 120 Output: 21 Solution: https://leetcode.com/problems/reverse-integer/discuss/229800/Python3-Faster-than-100 classSolution:defreverse(sel...
SOLUTION 1 用递归实现,逐层进行反转。遇到最后一个如果个数不为k,再反转一次即可。 View Code SOLUTION 2 另一个思路的递归: 先查看有没有k个node,如果有,切开2个链表,反转当前链表,并且使用递归处理下一个section,最后再把2者连接起来即可。 View Code SOLUTION 3 使用一个专用的反转函数来进行反转,从头到尾...
leetcode题解 7.Reverse Integer 题目: Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input:123Output:321 Example 2: Input:-123Output:-321 Example 3: Input:120Output:21 Note: Assume we are dealing with an environment which could only hold integers within the 32-...
leetcode/discuss思路: 思路1:新建一个uint32_t的数r:a:r <<=1;r每次左移,则原二进制数的最低位就变成新数的最高位了 b:r |=n &1;如果原数值为1则为1,为0则为0 (可否看做字符串,不可以!!因为输入的为整型数) c:n >>= 1;原数值每次右移1位 ...
Leetcode | Reverse Nodes in k-Group Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is....
LeetCode:Reverse Nodes in k-Group 题目链接 Given a linked list, reverse the nodes of a linked listkat a time and return its modified list. If the number of nodes is not a multiple ofkthen left-out nodes in the end should remain as it is....
Leetcode: Reverse Integer 题目: Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 题目提示: Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if you have already thought through this!
class Solution { public: int reverse(int x) { int result{0}; long long temp{0}; const int max_int=0x7fffffff;// 0111 1111 1111 1111 ... 1111 32bit const int min_int=0x80000000;//1000 0000 0000 0000 ... 0000 32bit while (x != 0) ...