Dictionaries And Maps In Java
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Dictionaries And Maps In Java
A map of zip codes and cities. You will then be given an unknown number of names to query your phone book for. In this post, you will find the solution for day 8:
It belongs to java.util package. A map of zip codes and cities. Its direct known subclass is the hashtable class.
A map contains unique keys.
Each key has a value and we can retrieve the values in a dictionary object using its corresponding key. Use maps when you want to retrieve and update elements by keys, or perform lookups by keys. Dictionaries (maps) the idea of the dictionary is that we often need to access an element using a key. These are notes from the source.
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