maximum index gfg

using namespace std;

int main() {
    int i,j,t,n,s=0;
    cin>>t;
    while(t--)
    {
        cin>>n;
        int maxx=0;
        int a[n];
        for(i=0;i<n;i++)cin>>a[i];
        for(i=0;i<n-1;i++)
        {
            j=n-1;
            while(j-i>maxx)
            {
                if(a[j]>=a[i]){maxx=j-i; break;}
                j--;
            }
        }
        cout<<maxx<<endl;
    }
    return 0;
}