多项式输出 没难度 直接模拟

解题思路:

注意事项:

参考代码:

#include"bits/stdc++.h"
using namespace std;
int n,a[110];
int main(){
    cin>>n;
    for(int i=1;i<=n+1;i++){
        cin>>a[i];
    }
    for(int i=1,j=n;i<=n+1;i++,j--){
        if(a[i]==0){
            continue;
        }
        if(a[i]<0){
            if(a[i]==-1){
                if(j==0){
                    cout<<"-1";
                }
                else{
                    if(j==1){
                        cout<<'-'<<"x";
                    }
                    else{
                        cout<<'-'<<"x"<<'^'<<j;
                    }
                }
            }
            else{
                if(j==0){
                    cout<<a[i];
                }
                else{
                    if(j==1){
                        cout<<a[i]<<'x';
                    }
                    else{
                        cout<<a[i]<<'x'<<'^'<<j;
                    }
                }

            }
        }
        else{
            if(i==1){
                if(a[i]==1){
                    if(j==0){
                        cout<<"1";
                    }
                    else{
                        if(j==1){
                            cout<<"x";
                        }
                        else{
                            cout<<"x"<<'^'<<j;
                        }
                    }
                    continue;
                }
                else{
                    if(j==0){
                        cout<<a[i];
                    }
                    else{
                        if(j==1){
                            cout<<a[i]<<'x';
                        }
                        else{
                            cout<<a[i]<<'x'<<'^'<<j;
                        }
                    }
                    continue;
                }

            }
            if(a[i]==1){
                if(j==0){
                    cout<<"+1";
                }
                else{
                    if(j==1){
                        cout<<'+'<<"x";
                    }
                    else{
                        cout<<'+'<<"x"<<'^'<<j;
                    }
                }
            }
            else{
                if(j==0){
                    cout<<'+'<<a[i];
                }
                else{
                    if(j==1){
                        cout<<'+'<<a[i]<<'x';
                    }
                    else{
                        cout<<'+'<<a[i]<<'x'<<'^'<<j;
                    }

                }
            }
        }
    }
    return 0;
}