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codility-training's Introduction

Codility-Training

Python solutions to Codility tasks: https://codility.com/train/

Lesson 1 - Iterations

Lesson 2 - Arrays

Lesson 3 - Time Complexity

Lesson 4 - Counting Elements

Lesson 5 - Prefix Sums

Lesson 6 - Sorting

Lesson 7 - Stacks and Queues

Lesson 8 - Leader

Lesson 9 - Maximum slice problem

Lesson 10 - Prime and composite numbers

Lesson 11 - Sieve of Eratosthenes

Lesson 12 - Euclidean algorithm

Lesson 13 - Fibonacci numbers

Lesson 14 - Binary search algorithm

Lesson 15 - Caterpillar method

Lesson 16 - Greedy algorithms

Lesson 17 - Dynamic programming

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codility-training's Issues

Wrong output on Chapter 5: Problem 1 (CountDiv) Problem

Test cases are not matched for the solution of the problem (Chapter 5: Problem 1 [CountDiv]). The solution function is returning a float number but integer is expected. If math.floor function is used with proper 0 logic then it is failing in some test cases.

Problem 11 alternative solution


from collections import OrderedDict

def Solution(A):
    if len(A) == 1:
        return 0

    tmp_result = OrderedDict()

    for idx, a in enumerate(A):
        if a in tmp_result:
            continue
        nb_divisors = len([x for x in A if not (a/x).is_integer()])
        tmp_result[a] = nb_divisors

    return [tmp_result[x] for x in A]

print(Solution(A))

[2, 4, 3, 2, 0]

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