Create 0441-arranging-coins.js #2619
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Solved 0441-arranging-coins.js in JS.
javascript/0441-arranging-coins.js
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| */ | ||
| var arrangeCoins = function(n) { | ||
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| let result1 = Math.floor((-1 + Math.sqrt(1+(8*n)))/2); |
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Suggestion: Make the math operations more readable
const value = Math.sqrt((8 * n) + 1)
const add = ((value + -1) >> 1)
const sub = ((value - -1) >> 1)Making math more readable.
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What? I don't get it. What do you mean by the period? |
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@aakhtar3, any update on this? I don't get it, what do you mean by the period? |
javascript/0441-arranging-coins.js
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| /** | ||
| * Binary Search | ||
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| * Time O(n*log(n)) | Space O |
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I added the Space complexity. Sorry for that. I have a question, in the binary-search solution, I tried to get the middle value with bit-operation. It is giving me the wrong answer for this input (n=2147483647). Any idea? I checked the number, it's (2^31 - 1). And we're adding 1 to that number. We're overflowing out of the bits. To fix this I can add the below condition
if(n === 2**31 - 1) {
right = right - 1;
}
It does work here
I know in other binary-search questions we did bit manipulation to get mid value. All the solutions were submitted successfully, but can they cause any trouble in the future? If Leetcode decides to change the constraint to those questions?
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Let me know if I didn't explain myself clearly. Sorry for the long ass question.
Adding Space complexity to binary-search solution.
javascript/0441-arranging-coins.js
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| /** | ||
| * Binary Search | ||
| * Time O(n*log(n)) | Space O(1) |
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Should be log(n) for binary search
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Sorry 😅. I updated it.
Fixed Time-complexity.
Solved 0441-arranging-coins.js in JS.
File(s) Added: 0441-arranging-coins.js
Language(s) Used: JavaScript
Submission URLs: https://leetcode.com/problems/arranging-coins/submissions/977117480/ (linear)
https://leetcode.com/problems/arranging-coins/submissions/977117662/ (binary search)
https://leetcode.com/problems/arranging-coins/submissions/984649285/ (math)