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[LeetCode] Spiral Matrix II
1 public class Solution { 2 public int[][] generateMatrix(int n) { 3 int num=1; 4 int [][] result = new int[n][n]; 5 6 ...
分类:其他好文   时间:2014-09-09 10:27:58    阅读次数:206
59. Spiral Matrix && Spiral Matrix II
思路: 可参考剑指offer:题20
分类:其他好文   时间:2014-09-09 10:26:28    阅读次数:250
[LeetCode] Search a 2D Matrix
public class Solution { public boolean searchMatrix(int[][] matrix, int target) { int low=0, high=matrix.length-1; while (low target)...
分类:其他好文   时间:2014-09-08 00:58:06    阅读次数:347
poj 1838
F -BananaTime Limit:1000MSMemory Limit:30000KB64bit IO Format:%I64d & %I64uSubmitStatusDescriptionConsider a tropical forrest, represented as a matrix...
分类:其他好文   时间:2014-09-07 23:45:45    阅读次数:252
[LeetCode] Rotate Image
public class Solution { public void rotate(int[][] matrix) { int n=matrix.length; for (int i=0; i<n/2; i++) { for (int j=i...
分类:其他好文   时间:2014-09-07 14:42:05    阅读次数:159
Search a 2D Matrix <leetcode>
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-09-07 10:58:14    阅读次数:185
LeetCode--Combination Sum
由于需要就地保存清零信息,所以把信息保存在第一行和第一列 1 class Solution { 2 public: 3 void setZeroes(vector > &matrix) { 4 const int ROW = matrix.size(); 5 ...
分类:其他好文   时间:2014-09-06 23:46:04    阅读次数:261
Leetcode 二分查找 Search a 2D Matrix
Search a 2D Matrix  Total Accepted: 18506 Total Submissions: 59402My Submissions Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following pr...
分类:其他好文   时间:2014-09-05 18:21:38    阅读次数:232
HDU4965-Fast Matrix Calculation(矩阵快速幂)
题目链接 题意:n*k的矩阵A和一个k*n的矩阵B,C = A * B。求M = (C)^(n * n)时,矩阵M中每个元素的和(每个元素都要MOD6) 思路:因为n最大到1000,所以不能直接用矩阵快速幂求AB的n*n次幂,但是可以将公式稍微转换下,M = AB * AB...* AB = A * (BA) *... * (BA) * B,这样BA的n*n -1次幂就能用...
分类:其他好文   时间:2014-09-05 16:17:22    阅读次数:173
Leetcode-Search a 2D Matrix
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-09-05 12:37:51    阅读次数:215
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