A656.划分数组

#include <bits/stdc++.h>
using namespace std;
int a1[105];

void guibing(int a,int b){
    if(a<b){
        int mid = (a+b)/2;
        cout<<"[";
        for(int i=a-1; i<mid;i++){
            cout<<a1[i]<<" ";
        }
        cout<<"],[";
        for(int i=mid; i<b;i++){
            cout<<a1[i]<<" ";
        }
        cout<<"]"<<endl;
        guibing(a,mid);
        guibing(mid+1,b);
    }
}

int main(){
    int n;
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>a1[i];
    	
    }
    guibing(1,n);
    return 0;
}