Algorithms

3.5 ■ Applications
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EXPERIMENTS
3.5.30 Duplicates (revisited). Redo Exercise 2.5.31 using the Dedup filter given on
page 490. Compare the running times of the two approaches. Then use Dedup to run the
experiments for N = 10 7 , 10 8 , and10 9 , repeat the experiments for random long values
and discuss the results.
3.5.31 Spell checker. With the file dictionary.txt from the booksite as commandline
argument, the BlackFilter client described on page 491 prints all misspelled words
in a text file taken from standard input. Compare the performance of RedBlackBST,
SeparateChainingHashST, and LinearProbingHashST for the file WarAndPeace.txt
(available on the booksite) with this client and discuss the results.
3.5.32 Dictionary. Study the performance of a client like LookupCSV in a scenario
where performance matters. Specifically, design a query-generation scenario instead of
taking commands from standard input, and run performance tests for large inputs and
large numbers of queries.
3.5.33 Indexing. Study a client like LookupIndex in a scenario where performance
matters. Specifically, design a query-generation scenario instead of taking commands
from standard input, and run performance tests for large inputs and large numbers of
queries.
3.5.34 Sparse vector. Run experiments to compare the performance of matrix-vector
multiplication using SparseVector to the standard implementation using arrays.
3.5.35 Primitive types. Evaluate the utility of using primitive types for Integer and
Double values, for LinearProbingHashST and RedBlackBST. How much space and
time are saved, for large numbers of searches in large tables?