#include 
    
     #include 
     
      using namespace std;void sets(char *data,int start,int end,int m, vector
      
        &v){	if( m <=0 || start>end ||end-start+1
       
        ::iterator it = v.begin();it
        
          v;	int len = strlen(data);	for(int i = 1 ; i <= len ; ++i)	{		sets(data,0,len-1,i,v);	}	return 1;}
        
       
      
     
    

结果：