C
#include <stdio.h>
int main()
{
int n=5; //size
int i,j,s;
for(i=1; i<=n; i++)
{
for(s=n-1; s>=i; s--)
{
printf(" ");
}
for(j=1; j<=i; j++)
{
if(i%2==0)
printf("%c ",j+64); // whitespace after %c
else
printf("%d ",j); // whitespace after %d
}
printf("\n");
}
}
C++
#include <iostream.h>
int main()
{
int n=5; //size
int i,j,s;
for(i=1;i<=n;i++)
{
for(s=n-1;s>=i;s--)
{
cout<<" ";
}
for(j=1;j<=i;j++)
{
if(i%2==0)
cout<<(char)(j+64)<<" "; // to get character
else
cout<<j<<" ";
}
cout<<endl;
}
return 0;
}
Java
class PatternProg
{
public static void main (String args[])
{
int n = 5; //size
int i;
int j;
int s;
for (i = 1;i <= n;i++)
{
for (s = n - 1;s >= i;s--)
{
System.out.print(" ");
}
for (j = 1;j <= i;j++)
{
if (i % 2 == 0)
{
System.out.print((char)(j + 64)+" ");
}
else
{
System.out.print(j+" ");
}
}
System.out.println();
}
}
}
C#
using System;
class PatternProg
{
public static void Main()
{
int n = 5; //size
int i;
int j;
int s;
for (i = 1; i <= n; i++)
{
for (s = n - 1; s >= i; s--)
{
Console.Write(" ");
}
for (j = 1; j <= i; j++)
{
if (i % 2 == 0)
{
Console.Write((char)(j + 64) + " ");
}
else
{
Console.Write(j + " ");
}
}
Console.WriteLine();
}
Console.ReadKey(true);
}
}
Python
n = 5 # size
for x in range(1, n + 1):
for s in range(n - 1, x - 1, -1):
print(" ", end="")
for y in range(1, x + 1):
if (x % 2 == 0):
print(chr(y + 64) + " ", end="") # for char
else:
print(str(y) + " ", end="")
print()