static void Main(string[] args)
{
StringDS s = new StringDS("I am isscuss");
StringDS i = new StringDS("nice");
StringDS r = new StringDS("student");
StringDS a = new StringDS("iss");
Console.WriteLine(s.GetLength());
Console.WriteLine(i.GetLength());
Console.WriteLine(r.GetLength());
StringDS s2 = s.SubString(8, 4);
Console.WriteLine(s2.ToString());
StringDS s3 = i.SubString(2, 1);
Console.WriteLine(s3.ToString());
Console.WriteLine(s.IndexOf(a));
Console.ReadKey();
}
public int IndexOf(StringDS s)
{
for (int i = 0; i <= this.GetLength() - s.GetLength(); i++)
{
bool isEqual = true;
for (int j = i; j < s.GetLength() + i; j++)
{
if (this[j] != s[j - i])
{
isEqual = false;
}
}
if (isEqual)
{
return(i);
}
else
{
continue;
}
}
return(-1);
}
public static StringDS Concat(StringDS s1, StringDS s2)
{
char[] newData = new char[s1.GetLength() + s2.GetLength()];
for (int i = 0; i < s1.GetLength(); i++)
{
newData[i] = s1[i];
}
for (int i = s1.GetLength(); i < newData.Length; i++)
{
newData[i] = s2[i - s1.GetLength()];
}
return(new StringDS(newData));
}
public static StringDS Concat(StringDS s1, StringDS s2)
{
char[] newData = new char[s1.GetLength()+s2.GetLength()];
for (int i = 0; i < s1.GetLength(); i++)
{
newData[i] = s1[i];
}
for (int i = s1.GetLength(); i < newData.Length; i++)
{
newData[i] = s2[i - s1.GetLength()];
}
return new StringDS(newData);
}
public int Compare(StringDS s)
{
int len = this.GetLength() < s.GetLength() ? this.GetLength() : s.GetLength();
int index = -1;
for (int i = 0; i < len; i++)
{
if (this[i] != s[i])
{
index = i;
break;
}
}
if (index != -1)
{
if (this[index] > s[index])
{
return(1);
}
else
{
return(-1);
}
}
else
{
if (this.GetLength() == s.GetLength())
{
return(0);
}
else
{
if (this.GetLength() > s.GetLength())
{
return(1);
}
else
{
return(-1);
}
}
}
}
/// <summary>
/// 如果两个字符串一样 返回0
/// 如果当前字符串小于S，那么返回-1
/// 如果当前字符串大于s，那么返回1
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public int Compare(StringDS s)
{
int len = this.GetLength() < s.GetLength() ? this.GetLength() : s.GetLength(); //取得两个字符串中的长度更小的字符串长度：
int index = -1; //存储不想等的字符的索引位置
for (int i = 0; i < len; i++)
{
if (this[i] != s[i])
{
index = i;
break;
}
}
if (index != -1)
{
if (this[index] > s[index])
{
return(1);
}
else
{
return(-1);
}
}
else
{
if (this.GetLength() == s.GetLength())
{
return(0);
}
else
{
if (this.GetLength() > s.GetLength())
{
return(1);
}
else
{
return(-1);
}
}
}
}
/// <summary>
/// 如果两个字符串一样 返回0
/// 如果当前字符串小于S，那么返回-1
/// 如果当前字符串大于s，那么返回1
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public int Compare(StringDS s)
{
int len = this.GetLength() < s.GetLength() ? this.GetLength() : s.GetLength();//取得两个字符串中的长度更小的字符串长度：
int index = -1;//存储不想等的字符的索引位置
for (int i = 0; i < len; i++)
{
if (this[i]!=s[i])
{
index = i;
break;
}
}
if (index!=-1)
{
if (this[index]>s[index])
{
return 1;
}
else
{
return -1;
}
}
else
{
if (this.GetLength()==s.GetLength())
{
return 0;
}
else
{
if (this.GetLength()>s.GetLength())
{
return 1;
}
else
{
return -1;
}
}
}
}
public void exercises()
{
StringDS s = new StringDS("i am cccc");
StringDS c = new StringDS("am cc");
StringDS r = new StringDS(" bbb");
int di = 0;
while (true)
{
di++;
int i = s.IndexOf(c);
Console.WriteLine(s[i]);
s[i] = r[2];
Console.WriteLine(s[i]);
if (di == s.GetLength())
{
break;
}
}
}
public int IndexOf(StringDS s)
{
for (int i = 0; i <= this.GetLength()-s.GetLength(); i++)
{
bool IsEqual = true;
for (int j = i; j < i+s.GetLength(); j++)
{
if (this[j]!=s[j-i])
{
IsEqual = false;
break;
}
}
if (IsEqual)
{
return i;
}
else
{
continue;
}
}
return -1;
}