我正在尝试比较四个数组。四个数组中的两个存储文件名,另外两个数组存储哈希码。
存储文件名的数组之一与存储哈希码的数组之一相关,这些哈希码针对文件名数组中的文件。
例如,我有两个项目 ProjectOne
和 ProjectTwo
。 ProjectOne
是一个名为 ProjectOneFiles
的数组和一个 ProjectOneHashcodes
数组的组合。这两个数组的长度始终相同。
ProjectTwo
将是一个名为 ProjectTwoFiles
的数组和一个 ProjectTwoHashcodes
数组的组合。这两个数组也将始终具有相同的长度。
但是,ProjectOne
不一定与 ProjectTwo
长度相同。这是我目前拥有的:
private void Compare()
{
String[] ProjectOneFiles = ProjOneFiles();
String[] ProjectTwoFiles = ProjTwoFiles();
String[] ProjectOneHash = ProjOneHash();
String[] ProjectTwoHash = ProjTwoHash();
for (int x = 0; x < ProjectOneFiles.length; ++x)
{
String Test1 = ProjectOneFiles[x];
String Test2 = ProjectTwoFiles[x];
String Test3 = ProjectOneHash[x];
String Test4 = ProjectTwoHash[x];
if (Test1 != Test2)
{
listBox6.Items.Add(Test1);
listBox6.Items.Add(Test2);
}
else if ((Test1 == Test2) && (Test3 == Test4))
{
listBox7.Items.Add(Test1);
}
else
{
listBox8.Items.Add(Test1);
}
}
}
显然现在我的问题出现在四个数组中的两个长度不一样的地方。如果我尝试迭代并且使用最小的数组大小,因此我不会完全迭代最大的数组。
如果我尝试迭代一个数组,比如说,有五个项目,一百次,显然我会得到一个超出范围的异常。
我需要首先比较两个文件名数组,然后如果它们相同则比较两个哈希码数组。如果它们满足某些要求,则需要将它们放入三个列表之一,并且所有三个列表都可能被填充。
我希望在 LINQ 中完成它:
var onlyinfirst =
from s in ProjectOneFiles
where !ProjectTwoFiles.Contains(s) &&
(ProjectOneHash.Contains(p) == ProjectTwoHash.Contains(p))
select s;
var onlyinsecond =
from s in ProjectTwoFiles
where !ProjectOneFiles.Contains(s)
select s;
var onboth =
from s in ProjectOneFiles
where ProjectTwoFiles.Contains(s)
select s;
但是我坚持这样做,因为我不确定如何执行嵌套语句来删除我的 if
语句。正如你在我的第一行中看到的,我试图这样做,但我现在完全坚持使用它。文件名数组和哈希码数组都是相关的,因此 LINQ 语句必须在一次传递中,否则哈希码将不再与文件名关联(索引方式)。
我的很多问题可以通过使用多维数组来解决,但我发现它们非常令人困惑,我宁愿不必重写我的函数来使用它们。
帮助解释的额外信息和功能:
如果有人需要此信息来帮助回答我的问题,可以从 XML 文档中提取文件名和数组,如下所示:
<?xml version="1.0" encoding="utf-8"?>
<Projects>
<Project Name="tfasdtyf">
<TestCycle Number="2387468">
<Files>
<FileName File="C:\Users\brandonm\Documents\Visual Studio 2008\Projects\WpfDllTest\WpfDllTest\bin\x86\Release\DllTest1.dll" />
<HashCode Code="0E-C5-03-AD-CC-21-62-49-D9-36-3F-C4-F1-17-BC-11" />
<FileName File="C:\Users\brandonm\Documents\Visual Studio 2008\Projects\WpfDllTest\WpfDllTest\bin\x86\Release\WpfDllTest.exe" />
<HashCode Code="60-46-A3-6F-82-E4-0A-00-2A-60-83-47-B2-16-F3-25" />
<FileName File="C:\Users\brandonm\Documents\Visual Studio 2008\Projects\WpfDllTest\WpfDllTest\bin\x86\Release\WpfDllTest.vshost.exe" />
<HashCode Code="76-7B-6F-37-0D-3A-F2-F4-32-D1-70-A5-75-3B-DE-95" />
</Files>
</TestCycle>
</Project>
<Project Name="tfasdtyf">
<TestCycle Number="23423">
<Files>
<FileName File="C:\Users\brandonm\Documents\Visual Studio 2008\Projects\WpfDllTest\WpfDllTest\bin\x86\Release\DllTest.dll" />
<HashCode Code="0E-C5-03-AD-CC-21-62-49-D9-36-3F-C4-F1-17-BC-11" />
<FileName File="C:\Users\brandonm\Documents\Visual Studio 2008\Projects\WpfDllTest\WpfDllTest\bin\x86\Release\WpfDllTest.exe" />
<HashCode Code="60-46-A3-6F-82-E4-0A-00-2A-60-83-47-B2-16-F3-24" />
<FileName File="C:\Users\brandonm\Documents\Visual Studio 2008\Projects\WpfDllTest\WpfDllTest\bin\x86\Release\WpfDllTest.vshost.exe" />
<HashCode Code="76-7B-6F-37-0D-3A-F2-F4-32-D1-70-A5-75-3B-DE-95" />
</Files>
</TestCycle>
</Project>
<Project Name="Music">
<TestCycle Number="12312">
<Files>
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\01 A1 Shut Ya Mouth.mp3" />
<HashCode Code="3E-92-80-93-D5-64-19-16-26-8D-39-2A-C7-0B-C8-EB" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\01 A1 Snake Eater.mp3" />
<HashCode Code="8B-DF-19-AE-87-52-64-2E-85-CF-57-4B-85-4D-CC-E9" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\01 A1 Stuck in the System.mp3" />
<HashCode Code="6A-30-A7-53-FF-29-A5-DF-6D-24-DF-41-74-EE-06-4D" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\01 Martin Solveig - Hello (Featuring Dragonette).mp3" />
<HashCode Code="93-90-A3-9C-BE-81-63-03-D7-96-1F-72-E4-ED-2D-32" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\01 Stimming - Funkworm.mp3" />
<HashCode Code="8F-E1-7A-F1-B7-80-C6-2F-DC-34-FD-82-A0-DA-35-5E" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\1. Downlink - Ignition.mp3" />
<HashCode Code="3D-89-B3-C2-73-A6-A0-85-02-C0-B4-F9-C8-09-14-C7" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\02 B1 Psychedelic Runway.mp3" />
<HashCode Code="00-72-5C-CE-25-73-98-31-69-71-68-48-31-A1-A3-5A" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\02 B1 Rapture.mp3" />
<HashCode Code="1E-A6-53-07-10-FD-A3-4C-EF-D6-92-7F-CE-97-88-6E" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\02_Digital-Controller.mp3" />
<HashCode Code="94-E0-CA-5F-2B-D2-56-7B-AF-2E-04-50-58-38-4D-B4" />
<FileName File="C:\Users\brandonm\Desktop\Stuff\Dubstep\2. Downlink - Gamma Ray.mp3" />
<HashCode Code="3C-7A-76-AD-A6-2C-D1-7E-61-24-C0-40-BD-A7-A9-41" />
</Files>
</TestCycle>
</Project>
</Projects>
然后,我有四个与下面类似的函数,它们提取项目的文件名和哈希码,这就是我获取每个数组的方式:
private String[] ProjOneFiles()
{
//Intialize the functions in the DLL
DllTest.Funtions Functions = new DllTest.Funtions();
//Set the location where the XMLs can be found
String Directory = "C:\\Users\\brandonm\\Desktop\\Backup\\XML\\";
//Get and set the number of items in the directory
int NumFiles = Functions.GetNumFiles(Directory);
//Create a search string to be used to determine the fullpath name of the file
//selected from the combobox
String SelectedFile = comboBox1.SelectedItem.ToString();
String SearchString = "*" + SelectedFile + "*.XML";
//Get and set the TC that will be used to get the filenames and hashcodes
int SelectedTC = int.Parse(comboBox2.SelectedItem.ToString());
//Get and set an array containing a full path structure to the item selected from
//the combobox using the search string created earlier. Get files returns an array
//thus needs to be stored in an array
String[] FullPaths = new String[NumFiles];
FullPaths = System.IO.Directory.GetFiles(
"C:\\Users\\brandonm\\Desktop\\Backup\\XML",
SearchString,
System.IO.SearchOption.AllDirectories);
int number = FullPaths.GetLength(0);
// The number of items in the XML ie. Number of Filenames in a particular TC
int NumXMLItems = NumXMLItemsListOne();
// Initialize the array that will hold the Filenames and their equivalent Hashcodes
String[] FileNames = new String[NumXMLItems];
int y = 0;
//Itteration through the all the XMLs in the location to add the current items into their arrays
for (int x = 0; x < NumFiles; x++)
{
String FullPath = FullPaths[x];
XPathNavigator Root = new XPathDocument(FullPath).CreateNavigator();
foreach (XPathNavigator Cycle in Root.Select(
String.Format(@"//TestCycle[@Number = '{0}']",
SelectedTC))
)
{
foreach (XPathNavigator Nav in Cycle.Select(@"Files/FileName/@File"))
{
FileNames[y] = Nav.Value;
//listBox4.Items.Add(Nav.Value);
y = y + 1;
}
}
}
return FileNames;
}
private String[] ProjOneHash()
{
//Intialize the functions in the DLL
DllTest.Funtions Functions = new DllTest.Funtions();
//Set the location where the XMLs can be found
String Directory = "C:\\Users\\brandonm\\Desktop\\Backup\\XML\\";
//Get and set the number of items in the directory
int NumFiles = Functions.GetNumFiles(Directory);
//Create a search string to be used to determine the fullpath name of the file
//selected from the combobox
String SelectedFile = comboBox1.SelectedItem.ToString();
String SearchString = "*" + SelectedFile + "*.XML";
//Get and set the TC that will be used to get the filenames and hashcodes
int SelectedTC = int.Parse(comboBox2.SelectedItem.ToString());
//Get and set an array containing a full path structure to the item selected from
//the combobox using the search string created earlier. Get files returns an array
//thus needs to be stored in an array
String[] FullPaths = new String[NumFiles];
FullPaths = System.IO.Directory.GetFiles(
"C:\\Users\\brandonm\\Desktop\\Backup\\XML",
SearchString,
System.IO.SearchOption.AllDirectories);
int number = FullPaths.GetLength(0);
// The number of items in the XML ie. Number of Filenames in a particular TC
int NumXMLItems = NumXMLItemsListOne();
// Initialize the array that will hold the Filenames and their equivalent Hashcodes
String[] HashCode = new String[NumXMLItems];
int z = 0;
//Itteration through the all the XMLs in the location to add the current items into their arrays
for (int x = 0; x < NumFiles; x++)
{
String FullPath = FullPaths[x];
XPathNavigator Root = new XPathDocument(FullPath).CreateNavigator();
foreach (XPathNavigator Cycle in Root.Select(
String.Format(@"//TestCycle[@Number = '{0}']",
SelectedTC))
)
{
foreach (XPathNavigator Nav in Cycle.Select(@"Files/HashCode/@Code"))
{
HashCode[z] = Nav.Value;
//listBox4.Items.Add(Nav.Value);
z = z + 1;
}
}
}
return HashCode;
}
最佳答案
简单但不是特别优雅的方式:
private void Compare()
{
String[] ProjectOneFiles = ProjOneFiles();
String[] ProjectTwoFiles = ProjTwoFiles();
String[] ProjectOneHash = ProjOneHash();
String[] ProjectTwoHash = ProjTwoHash();
for (int x = 0; x < ProjectOneFiles.length || x < ProjectTwoFiles.length; ++x)
{
String Test1 = x < ProjectOneFiles.length ? ProjectOneFiles[x] : "";
String Test2 = x < ProjectTwoFiles.length ? ProjectTwoFiles[x] : "";
String Test3 = x < ProjectOneFiles.length ? ProjectOneHash[x] : "";
String Test4 = x < ProjectTwoFiles.length ? ProjectTwoHash[x] : "";
if (Test1.CompareTo(Test2) != 0)
{
listBox6.Items.Add(Test1);
listBox6.Items.Add(Test2);
}
else if (Test3.CompareTo(Test4) == 0)
{
listBox7.Items.Add(Test1);
}
else
{
listBox8.Items.Add(Test1);
}
}
}
关于C# 比较 4 个字符串数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6830223/