我要评论复制代码 代码如下:
public static string replace(string source, string match, string replacement)
{
char[] sarr = source.tochararray();
char[] marr = match.tochararray();
char[] rarr = replacement.tochararray();
int idx = indexof(sarr, marr);
if (idx == -1)
{
return source;
}
else
{
return new string(sarr.take(idx).concat(rarr).concat(sarr.skip(idx + marr.length)).toarray());
}
}
/// <summary>
/// 查找字符数组在另一个字符数组中匹配的位置
/// </summary>
/// <param name="source">源字符数组</param>
/// <param name="match">匹配字符数组</param>
/// <returns>匹配的位置，未找到匹配则返回-1</returns>
private static int indexof(char[] source, char[] match)
{
int idx = -1;
for (int i = 0; i < source.length - match.length; i++)
{
if (source[i] == match[0])
{
bool ismatch = true;
for (int j = 0; j < match.length; j++)
{
if (source[i + j] != match[j])
{
ismatch = false;
break;
}
}
if (ismatch)
{
idx = i;
break;
}
}
}
return idx;
}
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