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02c0daf9e5
* Adding variable to fade out ambiguity * More readability on merge sorting algorithm * Updating merge_sort_fastest description and explaining why * Adding tests file with imports * Standardazing filenames and function names * Adding test cases and test functions * Adding test loop * Putting 'user oriented code' inside main condition for having valid imports * Fixing condition * Updating tests: adding cases and todo list * Refactoring first euler problem's first solution
35 lines
1.6 KiB
Python
35 lines
1.6 KiB
Python
#!/usr/bin/env python
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# Author: OMKAR PATHAK
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# This program will illustrate how to implement bucket sort algorithm
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# Wikipedia says: Bucket sort, or bin sort, is a sorting algorithm that works by distributing the
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# elements of an array into a number of buckets. Each bucket is then sorted individually, either using
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# a different sorting algorithm, or by recursively applying the bucket sorting algorithm. It is a
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# distribution sort, and is a cousin of radix sort in the most to least significant digit flavour.
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# Bucket sort is a generalization of pigeonhole sort. Bucket sort can be implemented with comparisons
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# and therefore can also be considered a comparison sort algorithm. The computational complexity estimates
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# involve the number of buckets.
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# Time Complexity of Solution:
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# Best Case O(n); Average Case O(n); Worst Case O(n)
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DEFAULT_BUCKET_SIZE=5
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def bucket_sort(my_list, bucket_size=DEFAULT_BUCKET_SIZE):
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if len(my_list) == 0:
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raise Exception("Please add some elements in the array.")
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min_value, max_value = (min(my_list), max(my_list))
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bucket_count = ((max_value - min_value) // bucket_size + 1)
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buckets = [[] for _ in range(int(bucket_count))]
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for i in range(len(my_list)):
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buckets[int((my_list[i] - min_value) // bucket_size)].append(my_list[i])
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return sorted([buckets[i][j] for i in range(len(buckets))
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for j in range(len(buckets[i]))])
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if __name__ == "__main__":
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user_input = input('Enter numbers separated by a comma:').strip()
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unsorted = [float(n) for n in user_input.split(',') if len(user_input) > 0]
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print(bucket_sort(unsorted)) |