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Earth - Sophie #12

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Hash Table Practice

Congratulations! You're submitting your assignment!

Comprehension Questions

Question Answer
Why is a good Hash Function Important? They are useful and time-efficient data structures
How can you judge if a hash function is good or not? Minimal collisions and good time complexity
Is there a perfect hash function? If so what is it? No, there is no such thing as a perfect hash function.
Describe a strategy to handle collisions in a hash table Chaining the collisions with a linked list would be one solution.
Describe a situation where a hash table wouldn't be as useful as a binary search tree
What is one thing that is more clear to you on hash tables now

CheezItMan
CheezItMan reviewed Apr 28, 2021
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Nice work Sophie, this hits the main learning goals, but I encourage you to look at the Big O considerations as well.

lib/exercises.rb
@@ -5,15 +5,36 @@
# Space Complexity: ?

def grouped_anagrams(strings)
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Space & Time complexity?

lib/exercises.rb
Comment on lines 13 to 17
# This method will return the k most common elements
# in the case of a tie it will select the first occuring element.
# Time Complexity: ?
# Space Complexity: ?
def top_k_frequent_elements(list, k)
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👍 Space & time complexity?

@steve-messing steve-messing changed the title tests passing Earth - Sophie Apr 30, 2021
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@steve-messing @CheezItMan