1 1 12 21 123 321 1234 4321 12345 54321 1234 4321 123 321 12 21 1 1

Answer 1

#include <iostream>
using namespace std;

int main()
{
int i,j;
for (i=1;i<=5;i++)
{
for (j=1;j<=5;j++)
{
if (j<=i)
cout <<j;
else
cout <<" ";
}
for (j=5;j<=9;j++)
{
if (i>=10-j)
cout <<10-j;
else
cout <<" ";
}
cout <<endl ;
}
for (i=5;i>=1;i--)
{
for (j=1;j<=5;j++)
{
if (j<=i)
cout <<j;
else
cout <<" ";
}
for (j=5;j<=9;j++)
{
if (i>=10-j)
cout <<10-j;
else
cout <<" ";
}
cout <<endl ;
}
return 0;
}

Answer 2

is this correct ?

Answer 3

kya hai ye