Chọn B

471639

#include <bits/stdc++.h>

using namespace std;

long long a[8],n,i,j;

int main()

{

n=8;

for (i=1; i<=n; i++) cin>>a[i];

for (i=1; i<=n-1; i++)

for (j=i+1; j<=n; j++)

if (a[i]<a[j]) swap(a[i],a[j]);

for (i=1; i<=n; i++) cout<<a[i]<<" ";

return 0;

}

#include <bits/stdc++.h>

using namespace std;

long long a[1000],n,i,tam,j;

int main()

{

cin>>n;

for (i=1; i<=n; i++)

cin>>a[i];

for (i=1; i<=n-1; i++)

for (j=i+1; j<=n; j++)

if (a[i]>a[j]) swap(a[i],a[j]);

for (i=1; i<=n; i++)

cout<<a[i]<<" ";

return 0;

}

Bài 1: 

#include <bits/stdc++.h>

using namespace std;

long long a[100],n,i,j,tam;

int main()

{

cin>>n;

for (i=1; i<=n; i++)

cin>>a[i];

for (i=1; i<=n-1; i++)

for (j=i+1; j<=n; j++)

if (a[i]<a[j]) swap(a[i],a[j]);

for (i=1; i<=n;i++)

cout<<a[i]<<" ";

return 0;

}

Hai thuật toán đó sẽ ngược nhau

Đáp án C

#include <bits/stdc++.h>

using namespace std;

long long b[10],i,j,n;

int main()

{

n=10;

for (i=1; i<=n; i++)

cin>>b[i];

for (i=1; i<=n-1; i++)

for (j=i+1;j<=n;j++)

if (b[i]<=b[j]) swap(b[i],b[j]);

for (i=1; i<=n; i++)

cout<<b[i]<<" ";

return 0;

}

Tham khảo:

program im_14424;
uses crt;
var A:array [1..1000] of integer;
i,j,n,tg:integer;
begin clrscr;
write('Nhap so phan tu n: '); readln(n);
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); 
read(A[i]);
end;
for i:=1 to n-1 do
for j:=i+1 to n do
if A[i]>A[j] then
begin
tg:=A[i];
A[i]:=A[j];
A[j]:=tg;
end;
writeln('Day so sap xep theo thu tu tang dan la: ');
for i:=1 to n do
write(A[i]:3);
readln;
end.

Code bằng C++

#include <bits/stdc++.h>

using namespace std;

long long a[1000000],i,j,n;

int main()

{

cin>>n;

for (i=1; i<=n; i++)

cin>>a[i];

for (i=1; i<=n-1; i++)

for (j=i+1; j<=n; j++)

if (a[i]>a[j]) swap(a[i],a[j]);

for (i=1;i<=n; i++)

cout<<a[i]<<" ";

return 0;

}