492. Construct the Rectangle(LeetCode)

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

 

 

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#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
class Solution {
public:
    vector<int> constructRectangle(int area) {
        int L, M, C1 = 1 - area;
        vector<int> v(2,0);
        if (area == 1)
        {
            v[0] = 1;
            v[1] = 1;
        }
        else
        {
            for (int i = 1; i <= area; i++)
            {
                L = i;
                M = area / L;

                if (L*M == area)
                {
                    if (L >= M && (L - M) <= abs(C1))
                    {
                        C1 = L - M;
                        v[0]=L;
                        v[1]=M;

                    }
                
                }

            }
            
        }
        return v;
    }
};
int main()

{
    Solution a;
    vector<int> s;
    s=a.constructRectangle(2);
    for (int i = 0; i < s.size(); i++)
    {
        cout << s[i] << endl;
    }
    system("PAUSE");
    return 0;
}

 



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