[Leetcode] [JavaScript] SQRT (x)

Source: Internet
Author: User
Tags square root

SQRT (x)

Implement int sqrt(int x) .

Compute and return the square root of X.

https://leetcode.com/problems/sqrtx/

For mathematics has already returned to the teacher of me, prescribe really kneel.

Check it Out is Newton iterative method (what a ghost.)

First guess a number, I guess one-third, and then apply the formula.

Candidate = (candidate + x/candidate)/2;

The title asks for an int, and my accuracy is 0.01.

Chanelton Iterative method It's interesting to see an article on the way.

http://www.guokr.com/post/90718/

1 /**2 * @param {number} x3 * @return {number}4  */5 varMYSQRT =function(x) {6     varcandidate = X/3;7      while(Math.Abs (X-candidate * candidate) > 0.01){8Candidate = (candidate + x/candidate)/2;9     }Ten     returnparseint (candidate);  One};

[Leetcode] [JavaScript] SQRT (x)

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.