J2SE1.4里的String.replaceAll效率好像不高丫，大家认为呢？

[iStringTheory]

有没有效率高的字符串替换函数？

[zez]

我自己写的速度是它的40% :)


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我们还年轻牛奶会有的奶牛也会有的
可天天在 csdn 混这些会有吗 ??

[iStringTheory]

zez(思恩 为老婆多挣钱 鹤清风) ( ) ：
用JProfiler测的？

[cbhyk]

看我的：
public static String replace(String s, String oldString, String newString)
{
if(s == null)
throw new NullPointerException("source String cannot be null");
if(oldString == null)
throw new NullPointerException("old String cannot be null");
if(newString == null)
throw new NullPointerException("new String cannot be null");
if(oldString.length() == 0)
throw new IllegalArgumentException("old String cannot be empty");

StringBuffer result = new StringBuffer();

int start = 0;
int end = s.indexOf(oldString);
while(end != -1)
{
result.append(s.substring(start, end));
result.append(newString);
start = end + oldString.length();
end = s.indexOf(oldString, start);
}
result.append(s.substring(start, s.length()));

return result.toString();
}