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Since the default implementation of contains() calls get(), the inner loop of FrequencyCounter if (!st.contains(word)) st.put(word, 1); else st.put(word, st.get(word) + 1); leads to two or three searches for the same key. To enable clear client code like this without sacrificing efficiency, we can use a technique known as software caching, where we save the location of the most recently accessed key in an instance variable. Modify SequentialSearchST and BinarySearchST to take advantage of this idea.

Since the default implementation of contains() calls get(), the inner loop of FrequencyCounter if (!st.contains(word)) st.put(word, 1); else st.put(word, st.get(word) + 1); leads to two or three searches for the same key. To enable clear client code like this without sacrificing efficiency, we can use a technique known as software caching, where we save the location of the most recently accessed key in an instance variable. Modify SequentialSearchST and BinarySearchST to take advantage of this idea.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Since the default implementation of contains() calls get(),
the inner loop of FrequencyCounter
if (!st.contains(word)) st.put(word, 1);
else st.put(word, st.get(word) + 1);
leads to two or three searches for the same key. To enable clear client code like this
without sacrificing efficiency, we can use a technique known as software caching, where
we save the location of the most recently accessed key in an instance variable. Modify
SequentialSearchST and BinarySearchST to take advantage of this idea.

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