C
#include<stdio.h>
#include<math.h>
int main()
{
int size=4;
int i,j,k;
int p;
for(i=size; i>=-size; i--)
{
for(j=0; j<abs(i); j++)
{
printf(" ");
}
/*initialize p with 0 (i>=0) or j */
p=(i>=0)?0:j;
for(k=size; k>=abs(i); k--)
{
printf("%c ",p+65);
p++;
}
printf("\n");
}
return 0;
}
C++
#include<iostream.h>
#include<math.h>
int main()
{
int size=4;
int i,j,k;
int p;
for(i=size;i>=-size;i--)
{
for(j=0;j<abs(i);j++)
{
cout<<" ";
}
/*initialize p with 0 (i>=0) or j */
p=(i>=0)?0:j;
for(k=size;k>=abs(i);k--)
{
cout<<char(p+65)<<" ";
p++;
}
cout<<endl;
}
return 0;
}
Java
class PatternProg
{
public static void main(String args[])
{
int size = 4;
int p;
int i,j;
for (i = size; i >= -size; i--)
{
for (j = 0; j < Math.abs(i); j++)
{
System.out.print(" ");
}
/*initialize p with 0 (i>=0) or j */
p=(i>=0)?0:j;
for (int k = size; k >= Math.abs(i); k--)
{
System.out.print((char)(p+65)+" ");
p++;
}
System.out.println();
}
}
}
C#
using System;
class PatternProg
{
public static void Main()
{
int size = 4;
int p;
int i, j, k;
for (i = size; i >= -size; i--)
{
for (j = 0; j < Math.Abs(i); j++)
{
Console.Write(" ");
}
/*initialize p with 0 (i>=0) or j */
p = (i >= 0) ? 0 : j;
for (k = size; k >= Math.Abs(i); k--)
{
Console.Write((char)(p + 65) + " ");
p++;
}
Console.WriteLine();
}
Console.ReadKey(true);
}
}
Python
size = 4
p = 0
for x in range(size, -(size + 1), -1):
for y in range(1, abs(x) + 1):
print(" ", end="")
if (x >= 0):
p = 0
else:
p = y
for z in range(size, abs(x) - 1, -1):
print(chr(p + 65) + " ", end="")
p += 1
print()