Sorting algorithms/Bead sort: Difference between revisions

From Rosetta Code
Content added Content deleted
(created page Bead sort. I would like to see more work in this algorithm so including page.)
 
(WP link, added header)
Line 1: Line 1:
{{task|Sorting Algorithms}}{{Sorting Algorithm}}
{{task|Sorting Algorithms}}{{Sorting Algorithm}}
In this task, the goal is to sort an array of positive integers using the [http://en.wikipedia.org/wiki/Bead_sort Bead Sort Algorithm].
In this task, the goal is to sort an array of positive integers using the [[wp:Bead_sort|Bead Sort Algorithm]].


Algorithm has O(S), where S is the sum of the integers in the input set: Each bead is moved individually. This is the case when bead sort is implemented without a mechanism to assist in finding empty spaces below the beads, such as in software implementations.
Algorithm has O(S), where S is the sum of the integers in the input set: Each bead is moved individually. This is the case when bead sort is implemented without a mechanism to assist in finding empty spaces below the beads, such as in software implementations.
=={{header|C++}}==

<lang cpp>
<lang cpp>



Revision as of 04:22, 25 August 2010

Task
Sorting algorithms/Bead sort
You are encouraged to solve this task according to the task description, using any language you may know.

In this task, the goal is to sort an array of positive integers using the Bead Sort Algorithm.

Algorithm has O(S), where S is the sum of the integers in the input set: Each bead is moved individually. This is the case when bead sort is implemented without a mechanism to assist in finding empty spaces below the beads, such as in software implementations.

C++

<lang cpp>

//this algorithm only works with positive, whole numbers. //O(2n) time complexity where n is the summation of the whole list to be sorted. //O(3n) space complexity.

  1. include<iostream>
  2. include<vector>

using namespace std;

void distribute( int dist, vector<int> &List)//*beads* go down into different buckets using gravity (addition). { if (dist > List.size() ) { List.resize(dist,0);//resize if too big for current vector }

for (int i=0; i < dist; i++) { List[i]=List[i]+1;} }

int main(){ vector<int> list; vector<int> list2; int myints[] = {5,3,1,7,4,1,1};

 vector<int> fifth (myints, myints + sizeof(myints) / sizeof(int) );
 cout << "#1 Beads falling down: ";
 for (int i=0; i < fifth.size(); i++)

distribute (fifth[i], list);

 cout << endl;

cout <<endl<< "Beads on their sides: "; for (int i=0; i < list.size(); i++) cout << " " << list[i]; cout << endl;


//second part

cout << "#2 Beads right side up: "; for (int i=0; i < list.size(); i++) distribute (list[i], list2); cout << endl;

cout <<endl<< "Sorted list/array"; for (int i=0; i < list2.size(); i++) cout << " " << list2[i]; cout << endl; return 0;

}

</lang>

Output:

Beads falling down:

Beads on their sides: 7 4 4 3 2 1 1 Beads right side up:

Sorted list/array 7 5 4 3 1 1 1