Your customer wants you to develop a solution that can encode Caesar cipherse. The input given by the user will be a string of alphanumeric characters (this will include 0 - 9 where the numbers will follow the letter 2) and a key which indicates how many characters the character in question needs to be shifted.
The output will be the encoded message that has been shifted by the key.
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Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.

Which cultural aspect does this type of song best portray? a german polka dance

Which operating system is a version of linux?