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BJP5 Exercise 10.4: doubleList

Language/Type: Java ArrayList Collections
Author: Marty Stepp (on 2019/09/19)

Write a method doubleList that takes an ArrayList of Strings as a parameter and that replaces every string with two of that string. For example, if the list stores the values {"how", "are", "you?"} before the method is called, it should store the values {"how", "how", "are", "are", "you?", "you?"} after the method finishes executing.

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This is a method problem. Write a Java method as described. Do not write a complete program or class; just the method(s) above.

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