Merge pull request #111 from sagar23sj/master

Create bucket_sort

Author: argonautica

C#/bucket_sort

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+ 
+namespace Sorting_Algorithms_In_C_Sharp
+{
+    public static class BucketSort
+    {
+        //Bucket sort breaks a list down into sub-lists, you can then use another algo to sort the sub-lists
+        //Bucketsort isn't a good choice if you don't know the range or distribution of the data
+        //Bucket Sort time complexity
+        //Average case: O(n+k) - k being the number of buckets that were created
+        //Worst case: O(N^2)
+ 
+        //In this case, we will focus on building an algorithm that uses bucketsort to sort an array of integers between 1 and 99
+        //we will also assume that the integers in the passed array are evenly distributed
+        public static List<int> BucketSort1(params int[] x)
+        {
+            List<int> result = new List<int>();
+ 
+            //Determine how many buckets you want to create, in this case, the 10 buckets will each contain a range of 10
+            //1-10, 11-20, 21-30, etc. since the passed array is between 1 and 99
+            int numOfBuckets = 10;
+ 
+            //Create buckets
+            List<int>[] buckets = new List<int>[numOfBuckets];
+            for (int i = 0; i < numOfBuckets; i++)
+                buckets[i] = new List<int>();
+ 
+            //Iterate through the passed array and add each integer to the appropriate bucket
+            for (int i = 0; i < x.Length; i++)
+            {
+                int buckitChoice = (x[i] / numOfBuckets);
+                buckets[buckitChoice].Add(x[i]);
+            }
+ 
+            //Sort each bucket and add it to the result List
+            //Each sublist is sorted using Bubblesort, but you could substitute any sorting algo you would like
+            for (int i = 0; i < numOfBuckets; i++)
+            {
+                int [] temp = BubbleSortList(buckets[i]);
+                result.AddRange(temp);
+            }
+            return result;
+        }
+ 
+        //Bubblesort w/ ListInput
+        public static int[] BubbleSortList(List<int> input)
+        {
+            for (int i = 0; i < input.Count; i++)
+            {
+                for (int j = 0; j < input.Count; j++)
+                {
+                    if (input[i] < input[j])
+                    {
+                        int temp = input[i];
+                        input[i] = input[j];
+                        input[j] = temp;
+                    }
+                }
+            }
+            return input.ToArray();
+        }
+        ////Call in Program.cs to test
+        //int[] x = new int[] { 99, 95, 90, 85, 80, 75, 70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 5, 1 };
+        //List<int> sorted = Bucket_Sort.BucketSort(x);
+        //foreach (int i in sorted)
+        //    Console.WriteLine(i);
+    }
+}