Added the algorithm for bucketsort written in c++.

C++/Sorting/bucketsort.cpp

@@ -0,0 +1,39 @@
+#include <iostream> 
+#include <algorithm> 
+#include <vector> 
+using namespace std; 
+  void bucketSort(double arr[], long long int n) 
+{  
+    vector<double> b[n]; 
+
+    for (int i=0; i<n; i++) 
+    { 
+       int bi = n*arr[i];  
+       b[bi].push_back(arr[i]); 
+    } 
+
+    for (int i=0; i<n; i++) 
+       sort(b[i].begin(), b[i].end()); 
+
+       int index = 0; 
+    for (int i = 0; i < n; i++) 
+        for (int j = 0; j < b[i].size(); j++) 
+          arr[index++] = b[i][j]; 
+} 
+
+
+int main() 
+{  
+    long long int n;
+    cout<<"Enter the no. of elements in the array"<<endl;
+    cin>>n;
+    double arr[n];
+    cout<<"Enter the elements of the array"<<endl;
+    for(int i=0;i<n;i++)
+      cin>>arr[i];
+    bucketSort(arr, n); 
+
+    cout << "Sorted array is \n"; 
+    for (int i=0; i<n; i++) 
+       cout << arr[i] << " ";  
+}