【入门】数字交换

#include<iostream>
using namespace std;
int main()
{
    int n,a[100],x,y,b,c;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>a[i];
    }
    cin>>x>>y;
    cin>>b>>c;
    for(int i=1;i<x;i++)
    {
        cout<<a[i]<<" ";
    }
    for(int i=b;i<=c;i++)
    {
        cout<<a[i]<<" ";
    }
    for(int i=y+1;i<=b-1;i++)
    {
        cout<<a[i]<<" ";
    }
    for(int i=x;i<=y;i++)
    {
        cout<<a[i]<<" ";
    }
    for(int i=c+1;i<=n;i++)
    {
        cout<<a[i]<<" ";
    }
    return 0;
}