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Author: ParthDhavan04

Patterns/pat27.java

@@ -0,0 +1,38 @@
+class pat27 {
+    public static void main(String[] args) {
+        /*
+            1 2 3 4  17 18 19 20
+              5 6 7  14 15 16
+                8 9  12 13
+                  10 11
+        */
+
+         int k=0,l=17;
+
+        for(int i=4;i>=1;i--){
+            
+            if(i!=4)  //avoid first time
+            l=l-(2*i);
+
+            for(int s=(4-i);s>=1;s--)
+               System.out.print("  ");
+            
+
+            for(int j=i;j>=1;j--)
+                System.out.print(++k +" ");
+                
+            
+            /* triangle 2 */
+            
+          
+            for(int j=1;j<=i;j++)
+            System.out.print(l++ +" ");
+            
+            l=l-1;
+            
+            
+            System.out.println();
+        }
+    }
+    
+}