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LeetCode: Construct the Rectangle

Posted on February 20, 2018July 26, 2020 by braindenny

Construct the Rectangle



Similar Problems:

  • CheatSheet: Leetcode For Code Interview
  • CheatSheet: Common Code Problems & Follow-ups
  • Tag: #rectangle, sqrt

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
  2. The web page’s width and length you designed must be positive integers.

Github: code.dennyzhang.com

Credits To: leetcode.com

Leave me comments, if you have better ways to solve.


## https://code.dennyzhang.com/construct-the-rectangle
## Basic Ideas:
##
## Complexity: Time O(sqrt(n)), Space O(1)
class Solution:
    def constructRectangle(self, area):
        """
        :type area: int
        :rtype: List[int]
        """
        import math
        for num in range(int(math.sqrt(area)), 0, -1):
            if area % num == 0:
                return [int(area/num), num]
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Posted in BasicTagged rectangle, sqrt

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