Restyle added pattern question in which we have to draw an inverted hour glass

hacktober-1/src/invertedHourglass.java

@@ -0,0 +1,47 @@
+import java.util.Scanner;
+
+public class invertedHourglass {
+
+  public static void main(String[] args) {
+    // TODO Auto-generated method stub
+    Scanner scn = new Scanner(System.in);
+    int n = scn.nextInt();
+    int nst = 1;
+    int nsp = 2 * n - 1;
+    int count = 1;
+    int row = 1;
+    while (row <= 2 * n + 1) {
+      count = n;
+      int cst = 1;
+      while (cst <= nst) {
+        System.out.print(count + " ");
+        cst++;
+        count--;
+      }
+      int csp = 1;
+      while (csp <= nsp) {
+        System.out.print("  ");
+        csp++;
+      }
+      cst = 1;
+      while (cst <= nst) {
+        count++;
+        if (cst == 1 && row == n + 1) {
+          count++;
+          cst++;
+        }
+        System.out.print(count + " ");
+        cst++;
+      }
+      System.out.println();
+      if (row <= n) {
+        nst++;
+        nsp -= 2;
+      } else {
+        nst--;
+        nsp += 2;
+      }
+      row++;
+    }
+  }
+}

hacktober-1/src/rotateAnArray.java

@@ -0,0 +1,24 @@
+
+public class rotateAnArray {
+
+  public static void main(String[] args) {
+    // TODO Auto-generated method stub
+    int[] arr = {10, 20, 30, 40};
+    rotate(arr, 2);
+  }
+  public static void rotate(int[] a, int n) {
+
+    for (int i = 0; i < n; i++) {
+      int temp = a[a.length - 1];
+      for (int j = a.length - 1; j >= 1; j--) {
+
+        a[j] = a[j - 1];
+      }
+
+      a[0] = temp;
+    }
+    for (int val : a) {
+      System.out.print(val + " ");
+    }
+  }
+}