co ai giup to bai nay voi!

import java.util.Scanner;

public class test1{
        // Ham nhap
    void Iput(){
        int[] a;
        int n;
        Scanner iput = new Scanner(System.in);
        System.out.print("\nSo phan tu mang: ");
            n = iput.nextInt();
        a = new int[n];
        for(int i=0; i<n; i++){
            System.out.print("\na["+i+"] = ");
                a[i] = iput.nextInt();
        }
        Display(a,n);       
    }
        // Ham tinh tong cac phan tu mang
    int Sum(int[] a, int n){
        int l = 0;
        for(int i = 0; i<n; i++){
            l += a[i];
        }
        return (l);
    }
        // Ham sap xep cac phan tu theo chieu tang dan
    void sapxep(int[] a, int n){
        int t = 0;
        for(int i = 0; i<n; i++){
            for(int j = i+1; j<n; j++)
                if(a[i]>a[j]){
                    t = a[i];
                    a[i] = a[j];
                    a[j] = t;
                }       
        }
        System.out.print("\nMang sau khi sap xep la: ");
        for(int k = 0; k<n; k++)
            System.out.print(" "+a[k]);
    }
        // Ham hien thi
    void Display(int[] a, int n){
        System.out.print("\nTong cac phan tu: "+Sum(a,n)+"\n\n");
        sapxep(a,n);
    }
        // Ham chinh
    public static void main(String[] args){
        test1 test = new test1();
        test.Iput();
    }
   
}

import java.util.Scanner;
public class baitap1

{ Scanner arrayName=new Scanner(System.in);
//**********************Khai Bao Bien**************************
int i,j,n;
int A[]=new int[100];;
int total=0;
//**********************NHap N*********************************
void nhap()
{
System.out.print("Nhap n=");
n=arrayName.nextInt();
System.out.println(n);//*******************hien thi size mang
//****************hien thi mang*******************
for(i=0;i<n;i++)


{ System.out.printf("nhap phan tu cho mang A["+i+"]=");
A[i]=arrayName.nextInt();

http://System.out.printf("=A[%d]"+A[i]);
}
http://System.out.print(A[i]);
}
//*******************Hien thi mANG********************************
//Void dislayMang()

//********************TInH TONG*******************************
int tinhtong(int A[],int n)
{
for(i=0;i<n;i++)
{
total=total+A[i];
}

}return (total);
//*********************HIEN THI TONG*********************
void hienthi()
{for(i=1;i<=n;i++)
   System.out.printf(" tong cua mang A là total=%d\n",+total);
}

//**********************SAP XEP MANG***********************
void sapxep()
{
for(i=0;i<n;i++)
{
for(j=i+1;j<=n;j++)
{
if(A[j]<A[i])
{int tg;
tg=A[j];
A[j]=A[i];
A[i]=tg;
}
}
}
System.out.print("Mang da sap xep la:\n");
    for(i=1;i<=n;i++)

System.out.printf("mang thu %d la %d:\n",i,A[i]);
}
//**************************Hien thi mang sap xep***********************
//void Hienthi_mang_sapxep()
//{System.out.print("Mang da sap xep la:\n");
//    for(i=0;i<=n;i++)

http://System.out.printf("mang thu %d la %d:\n",i,A[i]);
http://System.out.println();
//}
public static void main(String[] args)
{
baitap1 x=new baitap1();
x.nhap();
http://x.dislayMang();
x.hienthi();
http://x.Hienthi_Tong();
x.sapxep();
}
}

import java.util.Scanner;
public class baitap1

{ Scanner arrayName=new Scanner(System.in);
//**********************Khai Bao Bien**************************
int i,j,n;
int A[]=new int[100];;
int total=0;
//**********************NHap N*********************************
void nhap()
{
System.out.print("Nhap n=");
n=arrayName.nextInt();
System.out.println(n);//*******************hien thi size mang
//****************hien thi mang*******************
for(i=0;i<n;i++)


{ System.out.printf("nhap phan tu cho mang A["+i+"]=");
A[i]=arrayName.nextInt();

http://System.out.printf("=A[%d]"+A[i]);
}
http://System.out.print(A[i]);
}
//*******************Hien thi mANG********************************
//Void dislayMang()

//********************TInH TONG*******************************
int tinhtong()
{
for(i=0;i<n;i++)
{
total=total+A[i];
}
return (total);
}
//*********************HIEN THI TONG*********************
void hienthi()
{for(i=1;i<=n;i++)
  System.out.printf(" tong cua mang A là total=%d\n",+tinhtong());
}

//**********************SAP XEP MANG***********************
void sapxep()
{
for(i=0;i<n;i++)
{
for(j=i+1;j<=n;j++)
{
if(A[j]<A[i])
{int tg;
tg=A[j];
A[j]=A[i];
A[i]=tg;
}
}
}
System.out.print("Mang da sap xep la:\n");
    for(i=1;i<=n;i++)

System.out.printf("  %d",A[i]);
}
//**************************Hien thi mang sap xep***********************
//void Hienthi_mang_sapxep()
//{System.out.print("Mang da sap xep la:\n");
//    for(i=0;i<=n;i++)

http://System.out.printf("  %d",A[i]);
http://System.out.println();
//}
public static void main(String[] args)
{
baitap1 x=new baitap1();
x.nhap();
http://x.dislayMang();
x.hienthi();
http://x.Hienthi_Tong();
x.sapxep();
}
}