import java.util.Scanner;
public class CharacterTrianglePyramid
{
 public static void main(String[] args) {
  char ch;
  Scanner sc = new Scanner(System.in);
  System.out.print(“Enter last character of triangle : “);
  ch = sc.next().charAt(0);
  if (ch >= ‘a’ && ch <= ‘z’) {
   ch = (char)(ch – 32);
  }
  System.out.println();
  for (char r=”A”; ‘A’ <= ch; ch–, r++) {
   for (int sp = r; sp > ‘A’; sp–) {
    System.out.print(” “);
   }
   for (char c=”A”; c <= ch; c++) {
    System.out.print(c);
   }
   for (char c = (char)(ch – 1); c >= ‘A’; c–) {
    System.out.print(c);
   }
   System.out.println();
  }
 }
}

Output:

Enter last character of triangle : e

ABCDEDCBA
  ABCDCBA
    ABCBA
      ABA
        A

BUILD SUCCESSFUL (total time: 7 seconds)

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