Bài 3:
program tim_kiem;
uses crt;
var A:array[1..200] of integer;
n,i:byte;
k:integer;
begin
clrscr;
write('Nhap k: '); readln(k);
write('Nhap so luong phan tu N: '); readln(N);
for i:=1 to n do
begin
write('A[',i,']= '); readln(A[i]);
end;
write('Cac chi so cua phan tu co gia tri bang ',k,' la: ');
for i:=1 to n do
if A[i]=k then write(i,' ');
readln;
end.
Bài 4:
program sapxep;
uses crt;
var A:array[1..200] of integer;
n,i,j:byte;
tg:integer;
begin
clrscr;
write('Nhap so luong phan tu N: '); readln(N);
for i:=1 to n do
begin
write('A[',i,']= '); readln(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;
write('Day khong tang la: ');
for i:=1 to n do
write(A[i],' ');
readln;
end.
