Update OOP/Java/Lab/Week9/palin_alpha_rev_concat.java

OOP/Java/Lab/Week9/palin_alpha_rev_concat.java

@@ -28,7 +28,7 @@ class palin_alpha_rev_concat{
         String revstr=rev.toString();
         return revstr;
     }
-    static String concating(String str)
+    static String concatenate(String str)
     {
         String rev=reverse(str);
         return str+rev; 
@@ -65,7 +65,83 @@ class palin_alpha_rev_concat{
                 }
                 case 4:
                 {
-                    System.out.println("Concatenated String="+concating(str));
+                    System.out.println("Concatenated String="+concatenate(str));
+                    break;
+                }
+            }
+            System.out.println("Continue?(y/n)");
+            contin=in.next().charAt(0);
+        }
+
+    }
+}import java.util.Scanner;
+import java.util.Arrays;
+
+class palin_alpha_rev_concat{
+    static boolean palindrome(String str)
+    {
+        String rev=reverse(str);
+        return str.contentEquals(rev);
+    }
+
+    static String[] alphabetic(String str) {
+        char[] arr = str.toCharArray(); 
+        Arrays.sort(arr); 
+        String sortedStr = new String(arr); 
+        
+        String[] result = new String[sortedStr.length()];
+        for (int i = 0; i < sortedStr.length(); i++) {
+            result[i] = String.valueOf(sortedStr.charAt(i)); 
+        }
+        
+        return result; 
+    }
+    
+    static String reverse(String str)
+    {
+        StringBuffer rev=new StringBuffer(str);
+        rev.reverse();
+        String revstr=rev.toString();
+        return revstr;
+    }
+    static String concatenate(String str)
+    {
+        String rev=reverse(str);
+        return str+rev; 
+    }
+    
+    public static void main(String[] args) {
+        Scanner in=new Scanner(System.in);
+        System.out.println("Enter the String");
+        String str=in.nextLine();
+        char contin='y';
+        while(contin=='y'){
+            System.out.println("What do you want to do? 1. Check for Palindrome; 2. Write in an alphabetic order; 3. Reverse the String; 4. Concatenate with reversed");
+            int choice=in.nextInt();
+            switch(choice)
+            {
+                case 1:
+                {
+                    System.out.println("String is a palindrome:"+palindrome(str));
+                    break;
+                }
+                case 2: {
+                    String arr[] = alphabetic(str); 
+                    System.out.println("String in alphabetic order:");
+                    for (int i = 0; i < arr.length; i++) {
+                        System.out.print(arr[i]); 
+                    }
+                    System.out.println();
+                    break;
+                }
+                case 3:
+                {
+                    System.out.println("Reversed string="+reverse(str));
+                    break;
+                }
+                case 4:
+                {
+                    System.out.println("Concatenated String="+concatenate(str));
                     break;
                 }
             }