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bracket balance
(version: 0)
compare different iterations of a bracket balancing algorithm.
Comparing performance of:
split join vs replace vs slice and concat
Created:
7 years ago
by:
Guest
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Tests:
split join
isBalanced1 = (s, o, v, rx1, rx2) => { rx1 = /[^\(\)\{\}\[\]]/g; rx2 = /\[\]|\{\}|\(\)/g; v = ['()', '{}', '[]', '']; o = s.replace(rx1, ''); for (let i = 0; i < o.length; i += 0.5) { o = o.split(rx2).join``; } return v.includes(o); }; const test = '[[[{{{((()))}}}]]]'; console.log(isBalanced1(test));
replace
isBalanced2 = (s, o, v, rx1, rx2) => { rx1 = /[^\(\)\{\}\[\]]/g; rx2 = /\[\]|\{\}|\(\)/g; v = ['()', '{}', '[]', '']; o = s.replace(rx1, ''); for (let i = 0; i < o.length; i += 0.5) { o = o.replace(rx2, ''); } return v.includes(o); }; const test = '[[[{{{((()))}}}]]]'; console.log(isBalanced2(test));
slice and concat
isBalanced3 = (s, o, v, rx1, rx2) => { rx1 = /[^\(\)\{\}\[\]]/g; rx2 = /\[\]|\{\}|\(\)/g; v = ['()', '{}', '[]', '']; o = s.replace(rx1, ''); for (let i = 0; i < o.length; i++) { if (v.includes(`${o[i]}${o[i + 1]}`)) { o = o.slice(0, i).concat(o.slice(i + 2, o.length)); i -= 2; } } return v.includes(o); }; const test = '[[[{{{((()))}}}]]]'; console.log(isBalanced3(test));
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
split join
replace
slice and concat
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON benchmark definition and test cases. **Benchmark Definition:** The benchmark is designed to compare different iterations of a bracket balancing algorithm. The algorithm takes an input string `s` and checks if it's balanced using a set of predefined rules (`v`). The rules are: - `()` : parentheses - `{}` : curly brackets - `[]` : square brackets **Options Compared:** The benchmark compares three different approaches to balance the bracketed strings: 1. **Replace**: This approach replaces all occurrences of invalid bracket characters with an empty string, and then checks if the resulting string is in the set of valid bracket patterns (`v`). This approach modifies the input string. 2. **Split and Join**: This approach splits the modified input string into substrings separated by each type of bracket (e.g., `()`, `{}`, `[]`), and then joins them back together to form a new string. Finally, it checks if this new string is in the set of valid bracket patterns. 3. **Slice and Concat**: This approach iterates through the modified input string, removing pairs of adjacent brackets that don't match any valid pattern. If such a pair is found, it's removed from the string. After processing the entire string, it checks if the resulting string is in the set of valid bracket patterns. **Pros and Cons:** - **Replace**: This approach can be efficient for small inputs but may cause issues with large inputs due to the repeated replacement operations. - **Split and Join**: This approach ensures that all brackets are handled correctly by splitting them into individual characters, which might result in slightly slower performance compared to replacing or slicing. However, it provides a clear separation of concerns between string modification and bracket pattern matching. - **Slice and Concat**: This approach is likely the most efficient since it only requires iterating through the string once and doesn't involve any string replacement operations. **Library:** None are explicitly mentioned in the benchmark definition, but it seems that JavaScript's built-in regular expression and string manipulation functions (`/g`, `replace()`, `split()`, `join()`) are being used to implement these algorithms.
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