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Dictionary ADT
Dictionary (map, association list) is a data structure, which is generally an association of unique keys with some values. One may bind a value to a key, delete a key (and naturally an associated value) and lookup for a value by the key. Values are not required to be unique. Simple usage example is an explanatory dictionary. In the example, words are keys and explanations are values.
Dictionary ADT
Operations
- Dictionary create()
creates empty dictionary
- boolean isEmpty(Dictionary d)
tells whether the dictionary d is empty
- put(Dictionary d, Key k, Value v)
associates key k with a value v;
if key k already presents in the dictionary
old value is replaced by v
- Value get(Dictionary d, Key k)
returns a value, associated with key k
or null, if dictionary contains no such key - remove(Dictionary d, Key k)
removes key k and associated value - destroy(Dictionary d)
destroys dictionary d
Implementations
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