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1. Top results related to divide/conquer

   • Divide and Conquer algorithm in C++

     Top Answer

     Answered Jan 26, 2017 · 0 votes

     Got accepted (finally) using two binary search (each for lower bound, and upper bound) with this code:

     #include<bits/stdc++.h>using namespace std;-long long n,m,i,l,r,mid1,mid2,ans,tmp,cnt,haha,k;long long ar[26214400];long long func(long long x){ haha = 0; for (k = 0; k < n; k++) haha += x/ar[k]; return haha;}int main(){ cin >> n >> m; for(i = 0; i < n; i++) cin >> ar[i]; sort(ar,ar+n); l = ar[0]; r = ar[0]*m; mid1 = (l+r)/2; tmp = func(mid1); while (l < r){ mid1 = (l+r)/2; tmp = func(mid1); if (tmp < m) l = mid1+1; else if (tmp > m) r = mid1-1; else r = mid1-1; } mid1 = l; //lower bound l = ar[0]; r = ar[0]*m; mid2 = (l+r)/2; tmp = func(mid2); while (l < r){ mid2 = (l+r)/2; tmp = func(mid2); if (tmp < m) l = mid2+1; else if (tmp > m) r = mid2-1; else l = mid2+1; } mid2 = r; //upper bound while (mid1 <= mid2 and func(mid1) != m) mid1 += 1; while (mid2 >= mid1 and func(mid2) != m) mid2 -= 1; ans = mid2-mid1+1; cout << ans << endl;}

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   • Divide and Conquer Closest Pair Algorithm

     Top Answer

     Answered Apr 15, 2016 · 1 votes

     Use the following method with the change for minDisSimple. You can get more performance.

     static double minDisSimple() { // A straightforward method for computing the distance // of the two closest points in plane[0..N-1].- // to be completed double midDis = Double.POSITIVE_INFINITY; double temp; for (int i = 0; i < N - 1; i++) { for (int j = i + 1; j < N; j++) { temp = plane[i].distance(plane[j]); if (temp < midDis) { midDis = temp; } } } return midDis;}

     Performance wise for small amount of points simple method is good but larger amount of points Divide and Conquer is good. Try number of points with 10, 100, 1000, 10000, 100000, 1000000.

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     2/5

   • Divide and Conquer Archives

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   • divide and conquer and recursion

     Top Answer

     Answered Feb 12, 2010 · 26 votes

     "Always" is a scary word, but I can't think of a divide-and-conquer situation in which you couldn't use recursion. It is by definition that divide-and-conquer creates subproblems of the same form as the initial problem - these subproblems are continually broken down until some base case is reached, and the number of divisions correlates with the size of the input. Recursion is a natural choice for this kind of problem.

     See the Wikipedia article for more good information.

     Other Answers

     Answered Feb 12, 2010 · 8 votes

     A Divide-and-conquer algorithm is by definition one that can be solved by recursion. So the answer is yes.

     Other Answers

     Answered Feb 12, 2010 · 1 votes

     Usually, yes! Merge sort is an example of the same. Here is an animated version of the same.

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     4/5

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2. People also ask

   What is divide and conquer?

   • Divide and conquer is a way to break complex problems into smaller problems that are easier to solve, and then combine the answers to solve the original problem.

   Divide and Conquer | Brilliant Math & Science Wiki

   brilliant.org/wiki/divide-and-conquer/

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   What is divide and conquer algorithm?

   • Divide and Conquer is a problem-solving technique that involves breaking a larger problem into subproblems, solving the subproblems independently and combining the solutions of those subproblems to get the solution of the larger problem. Divide and Conquer Algorithm can be divided into three stages: Divide, Conquer and Merge. 1. Divide:

   Divide and Conquer Algorithm - GeeksforGeeks

   www.geeksforgeeks.org/divide-and-conquer/

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   How do you divide and conquer a problem?

   • Divide and conquer can be done in three broad steps, divide (into subproblems), conquer (by solving the subproblems), and combine (the answers to solve the original problem). Divide and conquer has a recursive step, where subproblems are solved, and a base case, which is the point where the problem can't be broken down any further.

   Divide and Conquer | Brilliant Math & Science Wiki

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   What is a divide and conquer paradigm?

   • The divide-and-conquer paradigm is often used to find an optimal solution of a problem. Its basic idea is to decompose a given problem into two or more similar, but simpler, subproblems, to solve them in turn, and to compose their solutions to solve the given problem. Problems of sufficient simplicity are solved directly.

   Divide-and-conquer algorithm - Wikipedia

   en.wikipedia.org/wiki/Divide-and-conquer_algorithm

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3. en.wikipedia.org › wiki › Divide_and_ruleDivide and rule - Wikipedia

   en.wikipedia.org › wiki › Divide_and_rule

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   Divide and rule policy ( Latin: divide et impera ), or divide and conquer, in politics and sociology is gaining and maintaining power divisively. This includes the exploitation of existing divisions within a political group by its political opponents, and also the deliberate creation or strengthening of such divisions.

4. www.geeksforgeeks.org › divide-and-conquerDivide and Conquer Algorithm - GeeksforGeeks

   www.geeksforgeeks.org › divide-and-conquer

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   Apr 30, 2024 · Divide and Conquer algorithm is a problem-solving strategy that involves breaking down a complex problem into smaller, more manageable parts, solving each part individually, and then combining the solutions to solve the original problem. It is a widely used algorithmic technique in computer science and mathematics.

   • Video Duration: 8 min

5. www.merriam-webster.com › dictionary › divide andDivide and conquer Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › divide and

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   Apr 10, 2024 · idiom. variants or divide and rule. : to make a group of people disagree and fight with one another so that they will not join together against one. His military strategy is to divide and conquer. Examples of divide and conquer in a Sentence. Recent Examples on the Web Clive Owen hopes to divide and conquer with his dual Emmy submissions this year.

6. Videos

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     MICHAEL ROMEO - Divide & Conquer (OFFICIAL VIDEO)

     Jan 7, 2022

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     11:22

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     Divide and Conquer: The Art of Breaking Down Problems | Recursion Series

     Jun 6, 2023

     26.5K Views

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     4:59

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     Conquer Divide - welcome2paradise (Official Video)

     May 11, 2023

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7. en.wikipedia.org › wiki › DivideDivide/Conquer - Wikipedia

   en.wikipedia.org › wiki › Divide

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   Divide/Conquer (pronounced "Divide and Conquer") is an American film and television production company founded in 2013 by Adam Hendricks, Greg Gilreath and John H. Lang. It is known for producing films such as Lucky, Cam, Black Christmas, Freaky, The Voyeurs, Vengeance, M3GAN and Totally Killer.

   • Founded: 2013; 10 years ago
   • Key people: Adam Hendricks, Greg Gilreath

   • Headquarters: Los Angeles, California, United States
   • Type: Privately held company

8. www.khanacademy.org › computing › computer-scienceDivide and conquer algorithms (article) | Khan Academy

   www.khanacademy.org › computing › computer-science

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   Divide-and-conquer. Both merge sort and quicksort employ a common algorithmic paradigm based on recursion. This paradigm, divide-and-conquer, breaks a problem into subproblems that are similar to the original problem, recursively solves the subproblems, and finally combines the solutions to the subproblems to solve the original problem.

9. en.wikipedia.org › wiki › Divide-and-conquer_algorithmDivide-and-conquer algorithm - Wikipedia

   en.wikipedia.org › wiki › Divide-and-conquer_algorithm

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   In computer science, divide and conquer is an algorithm design paradigm. A divide-and-conquer algorithm recursively breaks down a problem into two or more sub-problems of the same or related type, until these become simple enough to be solved directly.

10. brilliant.org › wiki › divide-and-conquerDivide and Conquer | Brilliant Math & Science Wiki

    brilliant.org › wiki › divide-and-conquer

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    Divide and conquer is a way to break complex problems into smaller problems that are easier to solve, and then combine the answers to solve the original problem. Divide and conquer is a powerful algorithm design technique used to solve many important problems such as mergesort , quicksort , calculating Fibonacci numbers , and performing matrix ...