生成上半部分 for i in range(5): print(' ' * i + '*' * (5 - i)) 生成下半部分 for i in range(4): print(' ' * (3 - i) + '*' * (2 + i))

#include<iostream> using namespace std; int main(){ cout<<"*****"<<endl; cout<<" ****"<<endl; cout<<" ***"<<endl; cout<<" **"<<endl; cout<<" *"<<endl; cout<<" "<<endl; cout<<" "<<endl; cout<<" ****"<<endl; cout<<""; return 0; }