Added Programs on String - under #1

Author: darshanr27

Strings/Anagram.java

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+/*
+
+Q: Write a java program to check whether two strings are anagram or not.
+Explaination: An anagram is a word, phrase, or name formed by rearranging the letters of another, such as cinema, formed from iceman.
+
+Sample Input: Listen, Silent
+Sample Output: Anagram
+
+Sample Input: Tic, Tac
+Sample Output: Not Anagram
+
+*/
+
+import java.util.Scanner;
+import java.util.Arrays;
+
+public class Anagram
+{
+	public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter first string:");
+        String str1 = scan.nextLine();
+        System.out.println("Enter second string:");
+        String str2 = scan.nextLine();
+        // Initially checking if the length of both strings are same or not if not then printing not anagram  and exiting the program
+        if(str1.length() != str2.length()) {
+            System.out.println("Not Anagram");
+            System.exit(0);
+        }
+        //If the length of both strings are same then converting both strings to lower case character array and sorting them
+        char []arr1 = str1.toLowerCase().toCharArray();
+        char []arr2 = str2.toLowerCase().toCharArray();
+        Arrays.sort(arr1);
+        Arrays.sort(arr2);
+        //Comparing the sorted arrays and printing the result
+        if(Arrays.equals(arr1, arr2)) {
+            System.out.println("Anagram");
+        }
+        else {
+            System.out.println("Not Anagram");
+        }
+    }
+}

Strings/Palindrome.java

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+/*
+
+Q: Write a java program to check if a given string is a palindrome or not.
+
+Sample Input: malayalam
+Sample Output: Entered string is a palindrome.
+
+*/
+
+import java.util.Scanner;
+
+public class Palindrome {
+//Method to check if the given string is palindrome or not
+	static void checkPalindrome(String str) {
+		String revstr = "";
+//		Loop for reversing the string
+		for(int i = str.length()-1; i >=  0; i--) {
+			revstr += str.charAt(i);  
+		}
+//		Condition checking if the reversed string is equals to main string or not
+		if(str.equalsIgnoreCase(revstr)) {
+			System.out.println("Entered string is a palindrome");
+		}
+		else {
+			System.out.println("Entered string is not a palindrome");
+		}
+    }
+//	Main method
+	public static void main(String[] args) {
+		Scanner scan = new Scanner(System.in);
+		System.out.println("Enter a string: ");
+		String str = scan.next();
+		checkPalindrome(str);
+		scan.close();
+	}
+}