Program to Print Diamond Character Pattern
In the previous article, we have discussed Java Program to Print Inverted Right-Angled Triangle with Row wise Decreasing Character Pattern
In this program we are going to see how to print the diamond character pattern.
- Java Code to Print Diamond Character Pattern
- C Code to Print Diamond Character Pattern
- C++ Code to Print Diamond Character Pattern
Example-1 When row value=5 A A B A B C A B A
Example-2: When row value=9 A A B A B C A B C D A B C D E A B C D A B C A B A
Now, let’s see the actual program to print it.
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Approach:
- Enter total row and store it in an integer variable
row_count. - Take two outer for loops, one for the upper half and the other for the bottom.
- Inside both the loops, take two inner for loops to print the space and the characters.
- After each iteration print a newline.
Java Code to Print Diamond Character Pattern
import java.util.Scanner;
class Main
{
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
//Taking number of rows as input from the user and
System.out.print("Rows(Enter odd number) : ");
int row_count = scan.nextInt();
//then dividing it by two to get the size of the halves
row_count/=2;
//row, col are iterator and
//the alphaAscii is the ASCII value holder
int row, col, alphaAscii;
//loop to print upper part of the pattern
for(row = 0; row<=row_count;row++)
{
//Resetting the alphabet to 'A' for every iteration
alphaAscii = 65;
//Inner loop to print space
for(col = row_count; col>=row; col--)
{
// printing space
System.out.print(" ");
}
//Inner loop to print characters starting from 'A'
for(col = 0; col<=row;col++)
{
// printing character
System.out.print((char) (alphaAscii+col)+" ");
}
System.out.println();
}
//loop to print lower part of the pattern
for(row = 0;row<=row_count;row++)
{
//Resetting the alphabet to 'A' for every iteration
alphaAscii = 65;
//Inner loop to print space
for(col = -1; col<=row;col++)
{
// printing space
System.out.print(" ");
}
//Inner loop to print characters starting from 'A'
for(col = 0; col<row_count-row; col++)
{
// printing character
System.out.print((char) (alphaAscii+col)+" ");
}
System.out.println();
}
}
}
Output: Rows(Enter odd number) : 9 A A B A B C A B C D A B C D E A B C D A B C A B A
C Code to Print Diamond Character Pattern
#include <stdio.h>
int main()
{
//Taking number of rows as input from the user and
printf("Rows(Enter odd number) : ");
int row_count;
scanf("%d", &row_count);
//then dividing it by two to get the size of the halves
row_count /= 2;
//row, col are iterator and
//the alphaAscii is the ASCII value holder
int row, col, alphaAscii;
//loop to print upper part of the pattern
for (row = 0; row <= row_count; row++)
{
//Resetting the alphabet to 'A' for every iteration
alphaAscii = 65;
//Inner loop to print space
for (col = row_count; col >= row; col--)
{
printf(" ");
}
//Inner loop to print characters starting from 'A'
for (col = 0; col <= row; col++)
{
printf("%c ", (char)(alphaAscii + col));
}
printf("\n");
}
//loop to print lower part of the pattern
for (row = 0; row <= row_count; row++)
{
//Resetting the alphabet to 'A' for every iteration
alphaAscii = 65;
//Inner loop to print space
for (col = -1; col <= row; col++)
{
printf(" ");
}
//Inner loop to print characters starting from 'A'
for (col = 0; col < row_count - row; col++)
{
printf("%c ", (char)(alphaAscii + col));
}
printf("\n");
}
return 0;
}
Output: Rows(Enter odd number) : 9 A A B A B C A B C D A B C D E A B C D A B C A B A
C++ Code to Print Diamond Character Pattern
#include <iostream>
using namespace std;
int main(int argc, char const *argv[])
{
cout << "Rows(Enter odd number) : ";
int row_count;
cin >> row_count;
row_count /= 2;
//Taking number of rows as input from the user and
//then dividing it by two to get the size of the halves
int row, col, alphaAscii;
//row, col are iterator and the alphaAscii is the ASCII value holder
for (row = 0; row <= row_count; row++)
{
//loop to print upper part of the pattern
alphaAscii = 65;
//Resetting the alphabet to 'A' for every iteration
for (col = row_count; col >= row; col--)
{
//Inner loop to print space
cout << " ";
}
for (col = 0; col <= row; col++)
{
//Inner loop to print characters starting from 'A'
cout << (char)(alphaAscii + col) << " ";
}
cout << endl;
}
for (row = 0; row <= row_count; row++)
{
//loop to print lower part of the pattern
alphaAscii = 65;
//Resetting the alphabet to 'A' for every iteration
for (col = -1; col <= row; col++)
{
//Inner loop to print space
cout << " ";
}
for (col = 0; col < row_count - row; col++)
{
//Inner loop to print characters starting from 'A'
cout << (char)(alphaAscii + col) << " ";
}
cout << endl;
}
return 0;
}
Output: Rows(Enter odd number) : 9 A A B A B C A B C D A B C D E A B C D A B C A B A
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