DSA/algorithms/CPlusPlus/Sorting/bucket-sort.cpp

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#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
void bucketSort(float a[], int n);
// Driver Code
int main()
{
float a[] = {0.971, 0.565, 0.420, 0.123, 0.315, 0.696};
int n = sizeof(a) / sizeof(a[0]);
cout << "Original array:\n";
for (int i = 0; i < n; i++)
cout << a[i] << " ";
bucketSort(a, n);
cout << "\nSorted array:\n";
for (int i = 0; i < n; i++)
cout << a[i] << " ";
return 0;
}
void bucketSort(float a[], int n)
{
// Create n empty buckets
vector<float> b[n];
//Put array elements in different buckets
for (int i = 0; i < n; i++)
{
int ib = n * a[i]; // Index in bucket
b[ib].push_back(a[i]);
}
//Sort individual buckets
for (int i = 0; i < n; i++)
sort(b[i].begin(), b[i].end());
//Concatenate all buckets into a[]
int in = 0;
for (int i = 0; i < n; i++)
for (int j = 0; j < b[i].size(); j++)
a[in++] = b[i][j];
}