- To print half triangle pattern using alphabet
User Input: 3
Output:
A B B C C C
import java.util.Scanner;
public class Pattern {
public static void main(String[] args) {
Scanner userInput = new Scanner(System.in);
System.out.print("Enter number of rows : ");
int rows;
char c='A';
rows=userInput.nextInt();
for(int i=1; i<=rows; i++) {
for(int j=1; j<=i; j++) {
System.out.print(c +" ");
}
c++;
System.out.print("\n");
}
}
}
Enter number of rows : 4 A B B C C C D D D DProgram
Main logic :
c='A';
for(int i=1; i<=rows; i++) { //rows : number of rows to print
for(int j=1; j<=i; j++) {
System.out.print(c +" ");
}
c++;
System.out.print("\n");
}
You can print the same pattern in small alphabets, just set c='a'