举例来说：char buf[] = {'a','b','c','d','e','f','\0','x','y','z'}当输入N=10或20，期待输出是6；当输入N=3或5，期待输出是3或5.

 

package JingDian;public class diguichar {    public static void main(String[] args){        String[] buf = {"a","b","c","d","e","f","\0","x","y","z"};        mystrlen k = new mystrlen();        System.out.println(k.strlen(buf, 2));            }}class mystrlen{    public int strlen(String[] buf,int N){         for(int i=0;i
     
      =i)              return i;                  }        return  N;            }}