CPP
cpp
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#include <iostream>
using namespace std;
int main() {
int i, n,j,k,a,u;
cout<<"Enter no of rows :"<<endl;
cin>>n;
a=0;
for(i=0;i<n;i++,a++)
{
u=1;
for(k=n;k>i;k--)
{
cout<<" ";
}
for(j=0;j<=i+a;j++)
{
if(j<=i)
{
cout<<j+1;
u=j;
}
else
{
cout<<u;
u--;
}
}
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OUTPUT
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