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![](https://rs.olm.vn/images/avt/0.png?1311)
program ChuyenXauSangChuThuong;
var
str: string;
i: integer;
begin
write('Nhap mot xau ky tu: ');
readln(str);
for i := 1 to Length(str) do
str[i] := LowerCase(str[i]);
writeln('Xau ky tu chuyen thanh chu thuong la: ', str);
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
Var a:array[1..1000] of integer;
i,m,tam:integer;
Begin
Write('m = ');readln(m);
For i:=1 to m do
Begin
Write('Nhap so thu ',i,' = ');readln(a[i]);
End;
For i:=1 to m do
If a[i] < a[i+1] then
Begin
tam:=a[i];
a[i]:=a[i+1];
a[i+1]:=tam;
End;
Write('Mang sau khi sap xep: ');
For i:=1 to m do
Write(a[i]:8);
Readln;
End.
![](https://rs.olm.vn/images/avt/0.png?1311)
1)
Var array:[1..1000] of integer;
i,n,t:integer;
Begin
Write('n = ');readln(n);
For i:=1 to n do
Begin
Write('Nhap so thu ',i,' = ');readln(a[i]);
End;
For i:=1 to n do
If a[i] > a[i+1] then
Begin
t:=a[i];
a[i]:=a[i+1];
a[i+1]:=t;
End;
Write('Sap xep tang dan ');
For i:=1 to n do write(a[i]:8);
Readln
End.
2)
Var array:[1..1000] of integer;
i,n,t:integer;
Begin
Write('n = ');readln(n);
For i:=1 to n do
Begin
Write('Nhap so thu ',i,' = ');readln(a[i]);
End;
For i:=1 to n do
If a[i] < a[i+1] then
Begin
t:=a[i];
a[i]:=a[i+1];
a[i+1]:=t;
End;
Write('Sap xep giam dan ');
For i:=1 to n do write(a[i]:8);
Readln
End.
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
string st;
int d,i;
int main()
{
getline(cin,st);
d=st.length();
for (i=0; i<=d-1; i++)
if ((st[i]==' ') and (st[i+1]=' ')) st.erase(i,1);
cout<<st;
return 0;
}