0分求条

Luochenhao88 @ 2025-01-07 12:15:18

#include<bits/stdc++.h>
using namespace std;
int n,k;
double x,y;
int main(){
    cin>>n;
    double a[n+1],b[n];
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    sort(a+1,a+n+1);
    for(int i=1;i<=n;i++){
        if(i!=1&&i!=n){
            k++;
            b[k]=a[i];
        }
        y+=a[i];
    }
    y/=n*1.0;
    for(int i=1;i<=k;i++){
        x+=b[i];
    }
    x/=k*1.0;
    y-=x;
    if(y<0){
        y=-y;
    }
    printf("%.2f %.2f",x,y);
    return 0;
}
/*
样例输出:
11.00 0.00
*/

by hepeixi @ 2025-01-07 13:26:04

求关注！

#include<bits/stdc++.h>
using namespace std;
int main(){
    double maxx=-999999999,minn=999999999;
    double d,c[301],b[301],h=0;
    int n,i,v,k;
    cin>>n;
    for(i=1;i<=n;i++){
        cin>>c[i];
        h=h+c[i];
        if(c[i]>maxx){
            maxx=c[i];
            k=i;
        }
        if(c[i]<minn){
            minn=c[i];
            v=i;
        }
    }
    d=(h-c[v]-c[k])/(n-2.00);
    printf("%.2lf",d);
    cout<<" ";
    for(i=1;i<=n;i++){
        if(i!=k&&i!=v){
            b[i]=abs(d-c[i]);
        }else{
            b[i]=-10001;
        } 
    }
    maxx=-10001;
    for(i=1;i<=n;i++){ 
        if(b[i]>maxx){
            maxx=b[i];
        } 
    } 
    printf("%.2lf",maxx);
    return 0; 
}

by 0132linzixuan @ 2025-01-07 13:26:16

是b[i]数组每一个数与x相差的最大值才为y不是说不删最大最小值的平均值与原平均值的差 题目理解错了 还要给出该平均值的误差，即所有有效样本（即不包括已扣除的两个样本）与该平均值之差的绝对值的最大值。

by 0132linzixuan @ 2025-01-07 13:27:14

可供参考：

#include<bits/stdc++.h>
using namespace std;
double a[1000000];
int main(){
    int n;
    cin>>n;
    double maxx=0,minn=0x7ffffff;
    double am=0;
    int w1,w2;
    for(int i=1;i<=n;i++){
        cin>>a[i];
        if(a[i]>maxx) {
            maxx=a[i];
            w1=i;
        }
        if(a[i]<minn) {
            w2=i;
            minn=a[i];
        }
        am+=a[i];
    }
    double x=(am-minn-maxx)/(n-2);
    double y=0;
    for(int i=1;i<=n;i++){
        if(w1==i||w2==i) continue;
        y=max(fabs(a[i]-x),y);
    }
    cout<<fixed<<setprecision(2)<<x<<' '<<y;
} 

by NIzhenxin2014 @ 2025-01-07 13:28:47

一维数组？