Question

I want to ask a question about course 2008 fall .The question is in Set 6 problem #3.
"Next, change the implementation of is_valid_word to take as an argument the representation you created above rather than the word_list itself. Remember that the choice of representation can have a big impact on performance. This modification will improve the complexity of is_valid_word from O(len(word_list)) to O(1)." I can't understand how can we fulfill this change and do not know why it changes the complexity to O(1).

Answer 1

The pdf's link is here: http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00-introduction-to-computer-science-and-programming-fall-2008/assignments/pset6.pdf

Answer 2

how did you implement is_valid_word using word_list? why is its complexity O(len(word_list))?

how will you implement is_valid_word with the new representation of the wordlist?

http://wiki.python.org/moin/TimeComplexity

Answer 3

how

Answer 4

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Answer 5

Use a tree diagram to explain why the probability that a

Answer 6

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Answer 7

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The Leafsu2019 coach stated that u201cthe likelihoodof us winning the next game are 2/9, the likelihood of tying the next ga

Answer 8

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Answer 9

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Answer 10

Choose the correct answers.

Suzie Speedy is insured for bodily injury in the amount of 10/20.

Answer 11

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A graph is shown.

Answer 12

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Answer 13

Check please
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Answer 14

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Answer 15

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Answer 16

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Answer 17

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Answer 18

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Answer 19

Prompt
Write a short script (15u201320 lines) that creates an imagined scene between two or three characters.

Answer 20

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a.
a per curiam.
c.
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b.
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d.
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Answer 21

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A.

Answer 22

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A.