[LeetCode] 492. Construct the Rectangle_Easy tag: Math

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For a web developer, it is very important to know how to design a web page‘s size. So, given a specific rectangular web page’s area, your job by now is to design a rectangular web page, whose length L and width W satisfy the following requirements:

1. The area of the rectangular web page you designed must equal to the given target area.

2. The width W should not be larger than the length L, which means L >= W.
3. The difference between length L and width W should be as small as possible.

You need to output the length L and the width W of the web page you designed in sequence.

 

Example:

Input: 4
Output: [2, 2]
Explanation: The target area is 4, and all the possible ways to construct it are [1,4], [2,2], [4,1]. 
But according to requirement 2, [1,4] is illegal; according to requirement 3,  [4,1] is not optimal compared to [2,2]. So the length L is 2, and the width W is 2.

 

Note:

  1. The given area won‘t exceed 10,000,000 and is a positive integer

思路就是先找sqrt, 然后依次往下减, 一旦可以被整除, 就输出.

Code

class Solution:
    def constructRectangle(self, area):
        width = int(math.sqrt(area))
        while area%width:
            width -= 1
        return area//width, width

 



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