col

Leetcode 力扣 岛屿问题 C++实现

孤街浪徒 提交于 2019-12-16 07:31:52
Leetcode 力扣 岛屿问题 C++实现 写在最开始 问题描述 解决办法 代码 写在最开始 第一次尝试写博客,不知道能不能坚持下去,尝试记录一些学习的过程。 已经大三了才开始写,感觉有点晚了,希望以后也可以慢慢写,哈哈。 问题描述 题目:给定一个由 ‘1’(陆地)和 ‘0’(水)组成的的二维网格,计算岛屿的数量。一个岛被水包围,并且它是通过水平方向或垂直方向上相邻的陆地连接而成的。你可以假设网格的四个边均被水包围。 解决办法 这里需要用到BFS,一开始想了一会,后来发现只需要一个递归就可以解决问题,有的人用到了一个同样维度的visit表来标记是否访问,但是其实只要把探索过的 ‘1’ 全部置为 ‘0’ ,起到的效果与visit表相同。 注意需要加上错误检测,因为有的用例是空的,而且row的检测还要在col之前,否则访问空的col会报错。 代码 下面是完整的代码,比较简单,也不存在读不懂的问题。 class Solution { public: int numIslands(vector<vector<char>>& grid) { int row = grid.size(); if(row==0) return 0; int col = grid[0].size(); if(col==0) return 0; int count=0; int i,j; for(i=0;i<row

Matlab: sum column elements with restrictions

走远了吗. 提交于 2019-12-12 16:09:57
问题 We have a MxN matrix and a constrain cstrn = 100; . The constrain is the summarize limit of column's elements (per column): sum(matrix(:,:))<=cstrn . For a given example as the following: Columns 1 to 5: 15 18 -5 22 19 50 98 -15 39 -8 70 -15 80 45 38 31 52 9 80 72 -2 63 52 71 6 7 99 32 58 41 I want to find the max number of element per column who fulfill this constrain. How can i summarize every column element with the others elements in same column and find which sum combinations uses the

setCellStyle - apply cell style (percent) to matrix using XLConnect

拥有回忆 提交于 2019-12-12 05:17:51
问题 My question is based on an issue mentioned in a previous question Formatting of numbers using Mirai's XLConnect. I have trouble implementing this solution from @joran and I think I might not be the only person with this problem. I want to export a correlation matrix(10x10) to excel. It is saved as a matrix called export. library(XLConnect) wb <- loadWorkbook(paste0("corr_test.xlsx"), create = TRUE) prcntg <- createCellStyle(wb) setDataFormat(prcntg, format = "0.00%") createSheet(wb, name=

set colmodel of jqGrid when rows loaded from server but before add to grid

半城伤御伤魂 提交于 2019-12-12 04:46:41
问题 I want to change my grid's colmodel dynamiclly and I did lots of search but non of the question thread answered me. I need to pivot a select in sql so after I execute my query I find out names and count of my grid's columns. In other posts I find the way of changing the colmodel but I don`t know when and where I must do it. It is not possible to execute query two time becuase It may changed in result and decrease performance. 回答1: One can use beforeProcessing callback to make many

记首次Python实践应用(POST+Excel)

╄→гoц情女王★ 提交于 2019-12-11 05:24:55
import json import requests import xlwt StoreNos =["2001","2002","2003","2006","2007","2008","2009","2010","2012","2014","2013","2015","2016","2017","2019","2028","2030","2031","2032","2034","2036","2054"] years = ["2019-11-25","2019-11-26","2019-11-27","2019-11-28","2019-11-29","2019-11-30","2019-12-1","2019-12-2"] book = xlwt.Workbook()#新建一个excel sheet = book.add_sheet('StatisticsNum')#添加一个sheet页 row = 0 col = 0 sheet.write(row, col, '门店') for i in StoreNos: row = row + 1 sheet.write(row, 0, i) for j in years: col = col + 1 sheet.write(0, col, j) line = 1 for storeNo in StoreNos: col = 1 for

<col> width returns 0 for IE and Chrome

混江龙づ霸主 提交于 2019-12-11 01:58:52
问题 I have a table with three columns. I am using tag to specify the width of a column. Sample code: <table width="100%" border="1"> <colgroup style="background-color:#FF0000;"> <col width="100px" id="id1"></col> <col width="80px" id="id2"></col><col id="id3"></col></colgroup> <tbody> <tr> <th>ISBN</th> <th>Title</th> <th>Price</th> </tr> <tr> <td>3476896</td> <td>My first HTML</td> <td>$53</td> </tr> <tr> <td>2489604</td> <td>My first CSS</td> <td>$47</td> </tr> <tbody> </table> The problem is

<col class=“slick”> does not apply class to the columns of a table

十年热恋 提交于 2019-12-10 22:05:18
问题 My understanding of col is that it may be used to indicate a class for all the elements in a table's column. This doesn't seem to be working for me though. I can apply the class to individual td's, but I want col to help me avoid this. Here is the html head: <head> <style type="text/css"> .slick { background-color:#b0c4de; /*This always works*/ border-style:solid; /*This doesn't work when only applied to a <col>*/ border-width:5px; } </style> </head> Interestingly, the background color always

解数独算法

筅森魡賤 提交于 2019-12-10 19:19:14
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 完善填数解数独 #include<stdio.h> #include<string.h> struct Avaliable { short row; short col; }; int OnlyAvaliable(short n) { return n!= 0 && ( n & ( n - 1 ) ) == 0; } int PointAvaliable(short n) { return n?PointAvaliable(n & ( n - 1 ))+1:0; } int getHighBit(short n) { int i = 0; while(n) { n/=2; i++; } return i-1; } Avaliable g_avas[9][9]; int g_solved = 0; unsigned short g_SudokuMap[9][9] = { // {1,3,0,0,6,8,0,0,0}, // {6,0,0,0,0,0,0,8,1}, // {5,0,0,0,4,0,2,0,0}, // {3,0,0,7,0,2,0,0,0}, // {4,1,7,0,8,0,3,5,2}, // {0,0,0,1,0,4,0,0,9}, // {0,0,4,0,7,0,0,0,8}, // {2

这个七夕节,用Python为女友绘制一张爱心照片墙吧!【华为云技术分享】

笑着哭i 提交于 2019-12-10 13:22:17
欢迎添加华为云小助手微信(微信号: HWCloud002 或 HWCloud003 ),输入关键字“ 加群 ”,加入华为云线上技术讨论群;输入关键字“ 最新活动 ”,获取华为云最新特惠促销。华为云诸多技术大咖、特惠活动等你来撩 又是一年七夕时 今天是七夕节,中国传统的情人节。可预期到的是,估计有很多年轻的情侣们,已经为这个节日提前准备好久了吧?烂大街的套路无非就是送花、吃饭、电影院,看完电影找酒店。作为一个引爆消费的特别日子,程序猿们如何过节呢?今天公司博客举行了一个投票活动,七夕怎么过!结果多数人的投票都是闭门思过、一觉而过,难怪你们找不到女朋友啊!今天我就教你们如何不花钱,还能为心仪的她送去特别的礼物! 一行代码画爱心 这个骚操作不知道诱惑了多少人去学python,其实怎么说,如果真的代码写成那个样子,下班走夜路最好自带三级头,不然很容易挨闷棍。代码如下: print('\n'.join([''.join([('LovePython'[(x-y)%10]if((x*0.05)**2+(y*0.1)**2-1)**3-(x*0.05)**2*(y*0.1)**3<=0 else' ')for x in range(-30,30)])for y in range(15,-15,-1)])) 效果: 技术是不错,但是如果你把这个当做礼物送给女朋友,除非你是不想见到明天的太阳了

Add new column to data.frame based on rows grouped by episodes of specific days' length

南楼画角 提交于 2019-12-10 12:26:46
问题 df = read.table(text = 'ID Day Count Count_sum 33021 9535 3 29 33029 9535 3 29 34001 9535 3 29 32010 9534 2 29 33023 9534 2 29 45012 9533 4 29 47001 9533 4 29 48010 9533 4 29 50001 9533 4 29 49004 9532 1 29 9002 9531 2 29 67008 9531 2 29 40011 9530 1 29 42003 9529 2 29 42011 9529 2 29 55023 9528 1 29 40012 9527 3 29 43007 9527 3 29 47011 9527 3 29 52004 9526 4 29 52005 9526 4 29 52006 9526 4 29 52007 9526 4 29 19001 9525 1 29 57008 9524 5 29 57010 9524 5 29 58006 9524 5 29 58008 9524 5 29