public class SumK {

     public static void main(String[] args) {

         int[] array = {4,5,2,4,7,1,8,-3,6,3,2,6,1,4,-6,7,-4,2,-1,8,5,2,7,4,3};

         int k = 11;

         Map<Integer,Integer> set = new HashMap<Integer,Integer>();

         int[] sum = new int[array.length];

         sum[0]=array[0];

         set.put(sum[0], 0);

         for(int i =1 ; i < array.length ;i++){

             sum[i]=sum[i-1]+array[i];

             set.put(sum[i],i);

         }

         int count = 1;

         for(int i=array.length-1;i>0;i--){

             int key = sum[i]-k;

             if(set.get(key) != null && set.get(key) != 0){

                 System.out.print("第"+count+++"组字串 ");

                 for(int j = set.get(key)+1 ; j <=i ;j++){

                     System.out.print(array[j]+" ");

                 }

                 System.out.println();

             }

         }

     }

 }