Pattern 15

Author: sathishmepco

InterviewPrograms/src/com/java/patterns/Pattern15.java

@@ -0,0 +1,45 @@
+package com.java.patterns;
+import java.util.Scanner;
+/*
+Write the program to print the following pattern
+        A 
+      B A B
+    C B A B C
+  D C B A B C D
+E D C B A B C D E
+*/
+public class Pattern15 {
+	public static void main(String[] args) {
+		Scanner scanner = new Scanner(System.in);
+        int N = Integer.parseInt(scanner.nextLine().trim());
+        String CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        int d = (N-1)*2;
+        for(int i=0;i<N;i++){
+            for(int j=0;j<d-1;j++)
+                System.out.print(" ");
+            for(int j=i;j>=0;j--)
+                if(i == N-1 && j == i)
+                    System.out.print(CHARS.charAt(j));
+                else
+                    System.out.print(" "+CHARS.charAt(j));
+            for(int j=1;j<=i;j++)
+                System.out.print(" "+CHARS.charAt(j));
+			if(i==0 && N != 1)
+                System.out.print(" ");
+            d-=2;
+            if(i < N-1)
+                System.out.println();
+        }
+        scanner.close();
+	}
+}
+/*
+Input
+5
+Output
+        A 
+      B A B
+    C B A B C
+  D C B A B C D
+E D C B A B C D E
+*/