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Update README.md

Nhu Nguyen 6 년 전
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@@ -14,9 +14,13 @@ Your completed lab must be submitted via GitHub. Labs are not complete unless th
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 ### Part I:
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-Create a PhoneBook class that holds names and phone numbers in sorted order. You can use an associative data type (one which stores items as keys paired with values).
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+Create a PhoneBook class that holds names and phone numbers. You can use an associative data type (one which stores items as keys paired with values).
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-Your PhoneBook class should have a lookup() method which allows you to look up a person's phone number based on their name. PhoneBook should also have methods to add and remove entries, or to list all names or all entries (names an phone numbers).
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+Your PhoneBook class should have the following method
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+  * lookup(String name) -  allows you to look up a person's phone number based on their name
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+  * add(String name, String phoneNumber) - add entry
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+  * remove(String name) - remove entry
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+  * display() - list all entries (names an phone numbers) in alphabetical order
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 ### Part II:
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