- class Test
- {
- public static void main(String[] args)
- {
- String str = "dasdalldsdslldsdszxll";
- System.out.println("count="+get(str,"ll"));//打印ll出现的次数
- String s1 = "asdhellovdvdvv";
- String s2 = "cvfhelloff";
- System.out.println("temp="+gett(s1,s2));//打印两个字符串最大相同的部分
- }
- /* public static int get(String str,String key)
- {
- int count = 0;
- int index = 0;//定义一个位置
- while((index = str.indexOf(key))!=-1)//直到取不到需要的字符结束循环
- {
- str = str.substring(index + key.length());//字符串长度变化获得新的字符串
- count++;
- }
- return count;
- }
- */
- //第二种方法，大同小异
- public static int get(String str,String key)
- {
- int count = 0;
- int index = 0;
- while((index = str.indexOf(key,index))!=-1)
- {
- index = index + key.length();
- count ++;
- }
- return count;
- }
- public static String gett(String s1,String s2)
- {
- String max = "";
- String min = "";
- max = s1.length() > s2.length()?s1:s2;
- min = max == s1?s2:s1;//取短的字符串比较节省内存
- for(int x = 0;x < min.length();x++)
- {
- for(int y = 0,z = min.length() -x;z!=min.length()+1;y++,z++)
- {
- String temp = min.substring(y,z);
- if(max.contains(temp))
- return temp;
- }
- }
- return "";
- }
- }
转载：http://blog.csdn.net/chaoyu168/article/details/49280517
