6. Write a JAVA program to read two strings A, B and merge both the strings in the order AB and print the 5th character of the string AB in the output. Print -1 in the output if the string AB has length less than 5.

0.O.9. Write a Java program to check if a given string is a palindrome or not. A palindrome is a word, phrase, number, or other sequence of characters that reads the same backward as forward, ignoring spaces, punctuation, and capitalization. For example, "racecar" and "Madam" are palindromes, while "hello" and "Java" are not. Your program should take a string as input and return true if it's a palindrome, and false otherwise.. Absolutely.

12. WAP in Python to read input a string of length 5 from the user and print the string after concatenating the input string 10 times.

Question

36. Write a JAVA program to input two strings from the user and print all the characters present in both strings. If any character is present more than once in both the strings, then print the character again.

11. Write a JAVA program to read input a string from the keyboard and replace all uppercase alphabets in the string with an underscore. Sample Output: Input: AbcDeFG Output: _bc_e