c) Write a program in Java which accepts two strings as input and outputs a third string which is made up of the letters, that the input strings have in common. (8 Marks) d) Accept in a string which is no more than 80 characters. Swap the first half of the string with the second half and print out the result. For example: (8 Marks) Input String There is a cat sitting on the roof Output ting on the roof There is a cat si