本文实例讲述了C#使用二分查找法判断指定字符的方法。分享给大家供大家参考,具体如下:
private int sort_init( ref string [] chars, string str) //数组初始化
{
string [] temp = str.Split( ' ' );
//temp.
chars = new string [temp.Count()];
int ndx = 0;
int last_empty_positon = 0;
foreach ( string ch in temp)
{
ndx = last_empty_positon++;
chars[ndx] = ch;
if (ndx == 0) continue ;
if (ch.Length == 0) continue ;
while (chars[ndx].CompareTo(chars[ndx - 1]) < 0)
{
string s = chars[ndx];
chars[ndx] = chars[ndx - 1];
chars[ndx - 1] = s;
ndx--;
if (ndx == 0) break ;
}
}
return 1;
}
private bool isTheString( string str) //判断是否为指定字符
{
int end = stopChar.Length - 1;
int begin = 0;
while (end - begin > 1)
{
int mid = (end + begin) / 2;
if (stopChar[mid].CompareTo(str) > 0)
end = mid;
else if (stopChar[mid].CompareTo(str) < 0)
begin = mid;
else
return true ;
}
if (stopChar[end].CompareTo(str) == 0 || stopChar[begin].CompareTo(str) == 0)
return true ;
return false ;
}
希望本文所述对大家C#程序设计有所帮助。
dy("nrwz");
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