Alphabet Pattern (or) Character Pattern18 Program in Java

Write "Java"  Program to print below Alphabet Pattern18 (or) Character Pattern18:

To understand this example, you should have knowledge of the following topics:

·  Java For loop
·   Java programming operators.

Java Character pattern 18 program using For loop:
import java.util.Scanner;
class alphabetPattern18
{
public static void main(String[] ags)
{
    int i, j,k;
   System.out.println("Enter the number of lines");
   Scanner s = new Scanner(System.in);
   k = s.nextInt();
    for(i = 1;i <= k;i++)
    {  
        for(j = k;j >= i;j--)
           {
            System.out.print((char)(j+64));
            }
        System.out.println();
    }
  }
}
Output:
Enter the number of lines 5
EDCBA
EDCB
EDC
ED
E
Explanation:
  • First three integers "i", "j", "k" are declared of type int.
  • Then in the First for loop “i” value is initialized with a value of "1". 
  • Now “i” value is checked with the condition "i <= k" (where "k" value is given through Keyboard). If the condition is True loops enter into second for loop.
  • Now the loop enters into second for loop and checks the condition "j >= i". Where "j = k". and the condition is True.
  • Now prints the " Alphabet". Print up to second for loop condition becomes False.
  • When the value of "k"  becomes less than "i" value the program terminates.
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