Sweep: Write Collatz Conjecture bench in Python

[leon0399]

Details

Implement collatz/MaxSequence benchmark in Python, and put it into python/collatz/MaxSequence.py.

You MUST implement it exactly in the same way as in other languages examples: php/collatz/MaxSequence.php, javascript/collatz/MaxSequence.js, ruby/collatz/MaxSequence.rb. Add script to python/benchmark.yaml

Here are other examples of out Python code: python/primes/Atkin.py. Use it to se how collect and report execution time.

Checklist

• Create python/collatz/MaxSequence.py ✓ 7340e6c Edit
• Running GitHub Actions for python/collatz/MaxSequence.py ✓ Edit
• Modify python/benchmark.yml ✓ a862be2 Edit
• Running GitHub Actions for python/benchmark.yml ✓ Edit

[sweep-ai]

🚀 Here's the PR! #20

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Tip

I'll email you at [email protected] when I complete this pull request!

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Actions (click)

• ↻ Restart Sweep

GitHub Actions✓

Here are the GitHub Actions logs prior to making any changes:

Sandbox logs for 5a77198

Checking python/benchmark.yml for syntax errors... ✅ python/benchmark.yml has no syntax errors! 1/1 ✓

Checking python/benchmark.yml for syntax errors...
✅ python/benchmark.yml has no syntax errors!

Sandbox passed on the latest master, so sandbox checks will be enabled for this issue.

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Step 1: 🔎 Searching

I found the following snippets in your repository. I will now analyze these snippets and come up with a plan.

Some code snippets I think are relevant in decreasing order of relevance (click to expand). If some file is missing from here, you can mention the path in the ticket description.

benchmarks/php/collatz/MaxSequence.php

Lines 1 to 45 in 5a77198

	#!/usr/bin/env php
	<?php
	const NUMBER = 500000;
	function collatz($x) {
	$len = 0;
	while ($x > 1) {
	if ($x % 2 == 0) {
	$x = $x / 2;
	} else {
	$x = 3 * $x + 1;
	}
	$len++;
	}
	return $len;
	}
	function findMaxCollatz($to) {
	$result = [1, 1];
	for ($number = 1; $number <= $to; $number++) {
	$len = collatz($number);
	if ($len > $result[1]) {
	$result = [$number, $len];
	}
	}
	return $result;
	}
	(function () {
	$startTimeMs = floor(microtime(true) * 1000);
	print_r(findMaxCollatz(NUMBER));
	$endTimeMs = floor(microtime(true) * 1000);
	$durationMs = $endTimeMs - $startTimeMs;
	echo "Execution time: " . $durationMs . "ms\n";

benchmarks/javascript/collatz/MaxSequence.js

Lines 1 to 45 in 5a77198

	#!/usr/bin/env node
	'use strict';
	const NUMBER = 500000;
	function collatz(x)
	{
	var len = 0;
	while (x > 1) {
	if (x % 2 == 0) {
	x = x / 2;
	} else {
	x = 3 * x + 1;
	}
	len++;
	}
	return len;
	}
	function findMaxCollatz(to) {
	var result = [1, 1];
	for (var number = 1; number <= to; number++) {
	var len = collatz(number);
	if (len > result[1]) {
	result = [number, len];
	}
	}
	return result;
	}
	(async function() {
	const startTimeMs = new Date().getTime();
	console.log(findMaxCollatz(NUMBER));
	const endTimeMs = new Date().getTime();
	const durationMs = endTimeMs - startTimeMs;
	console.log(`Execution time: ${durationMs}ms`);

benchmarks/ruby/collatz/MaxSequence.rb

Lines 1 to 38 in 5a77198

	NUMBER = 500_000
	def collats(x)
	len = 0
	while x > 1 do
	if x % 2 == 0
	x = x / 2
	else
	x = 3 * x + 1
	end
	len += 1
	end
	return len
	end
	def findMaxCollatz(to)
	result = [1, 1]
	for number in 1..to
	len = collats(number)
	if len > result[1]
	result = [number, len]
	end
	end
	return result
	end
	startTimeMs = Time.now.to_f * 1000
	puts findMaxCollatz(NUMBER)
	endTimeMs = Time.now.to_f * 1000
	durationMs = (endTimeMs - startTimeMs).to_i

benchmarks/python/primes/Atkin.py

Lines 98 to 107 in 5a77198

	def run():
	startTimeMs = int(round(time.time() * 1000))
	print(find(UPPER_BOUND, PREFIX))
	endTimeMs = int(round(time.time() * 1000))
	executionTime = endTimeMs - startTimeMs
	print(f"Execution time: {executionTime}ms")

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Step 2: ⌨️ Coding

• Create python/collatz/MaxSequence.py ✓ 7340e6c Edit

Create python/collatz/MaxSequence.py with contents:
• Begin by importing the necessary module for time measurement: `import time`.
• Define a constant `NUMBER` with the value `500000`, similar to the examples in other languages.
• Implement the `collatz` function that takes an integer `x` as input and returns the length of the Collatz sequence for that number. Use a while loop to iterate until `x` becomes 1, applying the Collatz operations as per the examples.
• Implement the `findMaxCollatz` function that takes an integer `to` as input and returns the number and length of the longest Collatz sequence up to `to`. Use a for loop to iterate through each number, calling the `collatz` function, and keep track of the maximum length and corresponding number.
• Add a main block to measure execution time, call the `findMaxCollatz` function with `NUMBER` as the argument, and print the result along with the execution time. Use the `time` module for measuring execution time, similar to the approach in `python/primes/Atkin.py`.

• Running GitHub Actions for python/collatz/MaxSequence.py ✓ Edit

Check python/collatz/MaxSequence.py with contents:

Ran GitHub Actions for 7340e6ce904d658943040c40c4ee02aa66d7e1f1:

• Modify python/benchmark.yml ✓ a862be2 Edit

Modify python/benchmark.yml with contents:
• Add an entry for the new Collatz Conjecture benchmark script under the Python section. The entry should follow the YAML list format, similar to other entries in the file. The entry should be `- collatz/MaxSequence.py`, ensuring it is properly indented to align with other benchmark script entries.

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+++ 
@@ -19,3 +19,4 @@
 
       - recursion/Tak.py
       - primes/Simple.py
+      - collatz/MaxSequence.py

• Running GitHub Actions for python/benchmark.yml ✓ Edit

Check python/benchmark.yml with contents:

Ran GitHub Actions for a862be27e94a577056e292d7f114653ea74f4bbc:

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Step 3: 🔁 Code Review

I have finished reviewing the code for completeness. I did not find errors for sweep/write_collatz_conjecture_bench_in_python.

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