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leetCode 59.Spiral Matrix II (螺旋矩阵II) 解题思路和方法
Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. For example, Given n = 3, You should return the following matrix: [  [ 1, 2, 3 ],  [ 8, 9, 4 ]...
分类:其他好文   时间:2015-07-15 15:08:07    阅读次数:253
HDU 2686 Matrix 3376 Matrix Again(费用流)
HDU 2686 Matrix题目链接3376 Matrix Again题目链接题意:这两题是一样的,仅仅是数据范围不一样,都是一个矩阵,从左上角走到右下角在从右下角走到左上角能得到最大价值思路:拆点。建图,然后跑费用流就可以,只是HDU3376这题,极限情况是300W条边,然后卡时间过了2333代...
分类:其他好文   时间:2015-07-15 13:03:31    阅读次数:104
Maximal Square
问题描述Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area.For example, given the following ...
分类:其他好文   时间:2015-07-15 12:33:46    阅读次数:92
[LeetCode][Java] Rotate Image
题目: 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? 题意: 给定一个 n x n 的二维矩阵,来表示一副图像。 把图像旋转90度(顺时针...
分类:编程语言   时间:2015-07-14 22:46:32    阅读次数:320
[leedcode 73] Set Matrix Zeroes
Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.public class Solution { public void setZeroes(int[][] matr...
分类:其他好文   时间:2015-07-14 19:51:10    阅读次数:105
UVA 11082 Matrix Decompressing 矩阵解压(最大流,经典)
题意:知道矩阵的前i行之和,和前j列之和(任意i和j都可以)。求这个矩阵。每个格子中的元素必须在1~20之间。矩阵大小上限20*20。思路: 这么也想不到用网络流解决,这个模型很不错。假设这个矩阵的每一行是水管,每一列是水管,每行有出水口流到每一列,这样想比较好理解。然后每行的流量和每列的流量知道....
分类:其他好文   时间:2015-07-14 19:51:03    阅读次数:88
[leedcode 74] 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:2015-07-14 19:35:04    阅读次数:103
leetCode 54.Spiral Matrix(螺旋矩阵) 解题思路和方法
Spiral Matrix Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example, Given the following matrix: [  [ 1, 2, 3 ],  [ 4, 5,...
分类:其他好文   时间:2015-07-14 17:59:10    阅读次数:141
线性代数相关库
blasThe BLAS (Basic Linear Algebra Subprograms) are routines that provide standard building blocks for performing basic vector and matrix operations. ...
分类:其他好文   时间:2015-07-14 17:45:50    阅读次数:106
HDU 2830 Matrix Swapping II (预处理的线性dp)
HDU 2830 Matrix Swapping II (预处理的线性dp)...
分类:移动开发   时间:2015-07-14 00:11:21    阅读次数:202
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