Sunday算法的改进

//java代码如下：

public static int ModifiedSunday(String s,String pattern)
 {
      int index=-1;
      int slen=s.length();
      int plen=pattern.length();
      int i=0,j=0,temp=0;
      while(i<slen&&j<plen)
  {
       temp=i+plen;
       while(i<slen&&j<plen&&s.charAt(i)==pattern.charAt(j))
       {i++;
        j++; }
       if(j==plen)
            return i-plen;
       else
       {i=temp;
        while(i<slen&&s.charAt(i)!=pattern.charAt(plen-1))
             i++;
        if(i<slen)
        { i=i-plen+1;
        j=0; }
       }
  }
  return index;
 }

其它算法总结链接：