Introduction to Strings

"A string is traditionally a sequence of characters, either as a literal constant or as some kind of variable." — Wikipedia: String (computer science)

This exercise is to test your understanding of Java Strings. A sample String declaration:

String myString = "Hello World!"

The elements of a String are called characters. The number of characters in a string is called the length, and it can be retrieved with the String.length() method.

Some important methods for Strings in Java:

• stringName.charAt(index) : returns char value for the particular index
• stringName.isEmpty() : checks if string is empty.(Return type boolean).

Learn more about strings and its methods by clicking here.

Task:

Given two strings of lowercase English letters, A  and B, perform the following operations:

• Sum the lengths of A and B.
• Determine if A is lexicographically larger than B (i.e.: does B come before A in the dictionary?).
• Capitalize the complete string A and B and print them on a single line, separated by a space.

The first line contains string A. The second line contains another string B. The strings are comprised of only lowercase English letters.

There are three lines of output:

For the first line, sum the lengths of A and B.

For the second line, write Yes if A is lexicographically greater than B otherwise print No instead.

For the third line, Capitalize the complete string A and B and print them on a single line, separated by a space.

Input 1:

 abc
 def

Output 1:

 6
 No
 ABC DEF

Explanation 1:

 Length of A = 3 and B = 3 so len(A) + len(B) = 6
 String "abc" is lexicographically smaller than "def"