C#数组的合并拆分

1.合并拆分数组

/// <summary>
/// 合并数组
/// </summary>
/// <param name="First">第一个数组</param>
/// <param name="Second">第二个数组</param>
/// <returns>合并后的数组(第一个数组+第二个数组，长度为两个数组的长度)</returns>
public string[] MergerArray(string[] First, string[] Second)
{
string[] result = new string[First.Length + Second.Length];
First.CopyTo(result, 0);
Second.CopyTo(result, First.Length);
return result;
}

/// <summary>
/// 数组追加
/// </summary>
/// <param name="Source">原数组</param>
/// <param name="str">字符串</param>
/// <returns>合并后的数组(数组+字符串)</returns>
public string[] MergerArray(string[] Source, string str)
{
string[] result = new string[Source.Length + 1];
Source.CopyTo(result, 0);
result[Source.Length] = str;
return result;
}

/// <summary>
/// 从数组中截取一部分成新的数组
/// </summary>
/// <param name="Source">原数组</param>
/// <param name="StartIndex">原数组的起始位置</param>
/// <param name="EndIndex">原数组的截止位置</param>
/// <returns></returns>
public string[] SplitArray(string[] Source, int StartIndex, int EndIndex)
{
try
{
string[] result = new string[EndIndex - StartIndex+1];
for (int i = 0; i <= EndIndex - StartIndex; i++) result[i] = Source[i+StartIndex];
return result;
}
catch (IndexOutOfRangeException ex)
{
throw new Exception(ex.Message);
}
}

/// <summary>
/// 不足长度的前面补空格,超出长度的前面部分去掉
/// </summary>
/// <param name="First">要处理的数组</param>
/// <param name="byteLen">数组长度</param>
/// <returns></returns>
public string[] MergerArray(string[] First, int byteLen)
{
string[] result;
if (First.Length > byteLen)
{
result = new string[byteLen];
for (int i = 0; i < byteLen; i++) result[i] = First[i + First.Length - byteLen];
return result;
}
else
{
result = new string[byteLen];
for (int i = 0; i < byteLen; i++) result[i] = " ";
First.CopyTo(result, byteLen-First.Length);
return result;
}
}
2.调用

string[] student1 = { "a", "b", "c", "d", "e", "f"};
string[] student2 = { "0", "1", "2", "3", "4", "5", "6", "6", "1", "8", "16", "10", "45", "37", "82" };
string student3 = "Test";
//两个数组相加 结果--> { "a", "b", "c", "d", "e", "f","0", "1", "2", "3", "4", "5", "6", "6", "1", "8", "16", "10", "45", "37", "82" };
string[] Merger1 = MergerArray(student1, student2);
//数组+字符串 结果-->{ "a", "b", "c", "d", "e", "f","Test"};
string[] Merger2 = MergerArray(student1, student3);
//不足10位的，前面补空格 结果-->{" ", " ", " ", " ", "a", "b", "c", "d", "e", "f"};
string[] Merger3 = MergerArray(student1, 10);
//超过3位的，只取最后3后 结果-->{"d", "e", "f"};
string[] Merger4 = MergerArray(student1, 3);
//截取部分数组 结果-->{"c", "d", "e"};
string[] SplitArray1 = SplitArray(student1, 2, 4);