所以我有一个MergeSort算法，我想将MergeSort与插入排序结合使用以减少合并的开销，问题是如何？我想使用插入排序对细分进行排序，然后合并。

 public class mergesorttest{
    public static void main(String[]args){
        int d[]= {10,2,3,4,5,6,5,4,3,5,6,7,1};
        mergeSort(d,0,d.length);
        for(int x:d) System.out.print(x+" "); 
        System.out.println(); 
    }

static void mergeSort(int f[],int lb, int ub){
    //termination reached when a segment of size 1 reached -lb+1=ub
    if(lb+1<ub){
        int mid = (lb+ub)/2;
        mergeSort(f,lb,mid);
        mergeSort(f,mid,ub);
        merge(f,lb,mid,ub);
    }
}

static void merge (int f[],int p, int q, int r){
    //p<=q<=r
    int i =p; int j = q; 
    //use temp array to store merged sub-sequence
    int temp[] = new int[r-p]; int t = 0; 
    while(i<q && j<r){
        if(f[i]<=f[j]){
            temp[t] =f[i]; 
            i++;t++;
        }
        else{
            temp[t] = f[j];
            j++;
            t++;
        }

        //tag on remaining sequence
        while(i<q){
            temp[t] = f[i];
            i++;
            t++;

        }
        while(j<r){
            temp[t]=f[j];
            j++;
            t++;
        }
        //copy temp back to f
        i=p;t=0;
        while(t<temp.length){
            f[i]=temp[t];
            i++;
            t++;
        }
        }
}
}

public static void insertion_srt(int array[], int n, int b){
  for (int i = 1; i < n; i++){
  int j = i;
  int B = array[i];
  while ((j > 0) && (array[j-1] > B)){
  array[j] = array[j-1];
  j--;
  }
  array[j] = B;
  }
  }