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There is a natural expectation after placing an item into a bag that we will later be able to remove the item from that bag. Otherwise we have created a hole. Let’s implement retrieval for our hash map.
Instructions
1.
Define a .retrieve()method for HashMap. It should take two parameters: self and key.
2.
.retrieve() should calculate the array index in the same way our .assign() does and then retrieve the value at that index.
Return that value.
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