题目在这里 https://leetcode.com/problems/rotate-image/ [个人分析] 这个题目,我觉得就是考察基本功.考察细心的,算法方面没有太多东西,但是对于坐标的使用有较高要求. 放了两个版本的答案,第一个版本是自己写的,第二个是目前最佳答案的Java改写. [代码注释] Solution1: 思路比较直接.既然要求in-place,那就在修改之前,先保存原先在那个位置上的值,然后尾巴咬尾巴的去修改:大意可以参考下图 Solution2: 偏数学的方法,先把矩阵“…

You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 解题思路: 找规律即可,JAVA实现如下: static public void rotate(int[][] matrix) { int[][] matrixArray=new int[matrix.length][ma…

题目要求:Rotate Image You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up:Could you do this in-place? 代码如下: class Solution { public: void rotate(vector<vector<int> > &matrix) { const in…

leetcode - 48. Rotate Image - Medium descrition You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which means you have to modify the input 2D matrix direct…

Given a linked list, rotate the list to the right by k places, where k is non-negative. Example 1: Input: 1->2->3->4->5->NULL, k = 2 Output: 4->5->1->2->3->NULL Explanation: rotate 1 steps to the right: 5->1->2->3-&g…

题目: You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note:You have to rotate the image in-place, which means you have to modify the input 2D matrix directly. DO NOT allocate another 2D matrix and do…

Rotate an array of n elements to the right by k steps. For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,4]. Note:Try to come up as many solutions as you can, there are at least 3 different ways to solve this pro…

You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up:Could you do this in-place? 题目标签:Array 这道题目给了我们一个n * n的矩阵,让我们旋转图片.题目要求in-place,所以就不能用额外的空间了.一开始自己写了一个很原始的方法,结果虽然通过,但是速度太慢.只好去看看别人的方法,看完觉得,自己…

题目链接: https://leetcode.com/problems/rotate-image/?tab=Description   Problem:给定一个n*n的二维图片,将这个二维图片按照顺时针旋转90°   求解过程:   参考链接 https://discuss.leetcode.com/topic/9744/ac-java-in-place-solution-with-explanation-easy-to-understand   求解过程如下所示:     首先对矩阵进行按照对…

题目:rotate list 解法1: <span style="font-size:18px;">/**LeetCode Rotate List:Given a list, rotate the list to the right by k places, where k is non-negative. * 题目:循环移动链表,等价于将链表从右边数的k个节点移动到表的前方 * 思路:移动倒是简单.重点是要找到链表倒数的k个数,就等价于找到倒数第K+1个数,设置两个指针,…