#29 Added Tree Sort

Author: mclmza

README.md

@@ -17,6 +17,8 @@
 - [Counting Sort](https://github.com/Zircoz/Sorting-Algorithms-in-Python/blob/master/counting_sort.py)
 - [Heap Sort](https://github.com/blackeye735/Sorting-Algorithms-in-Python/blob/master/Heapsort.py)
 - [Bucket Sort](https://github.com/Zircoz/Sorting-Algorithms-in-Python/blob/master/bucket_sort.py)
+-[Tree Sort](https://github.com/Zircoz/Sorting-Algorithms-in-Python/blob/master/tree_sort.py)
+
 
 ## Proposed List of Sorting Algos:
 

tree_sort.py

@@ -0,0 +1,51 @@
+class node:
+    def __init__(self, val):
+        self.val = val
+        self.left = None
+        self.right = None
+
+    def insert(self, val):
+        if self.val:
+            if val < self.val:
+                if self.left is None:
+                    self.left = node(val)
+                else:
+                    self.left.insert(val)
+            elif val > self.val:
+                if self.right is None:
+                    self.right = node(val)
+                else:
+                    self.right.insert(val)
+        else:
+            self.val = val
+
+
+def inorder(root, res):
+    if root:
+        inorder(root.left, res)
+        res.append(root.val)
+        inorder(root.right, res)
+
+
+def tree_sort(arr):
+    if len(arr) == 0:
+        return arr
+    root = node(arr[0])
+    for i in range(1, len(arr)):
+        root.insert(arr[i])
+    res = []
+    inorder(root, res)
+    return res
+
+def printList(arr):
+    for i in range(len(arr)):
+        print(arr[i],end=" ")
+    print()
+
+# driver code to test the above code
+arr = [1, 12, 11, 2, 13, 5, 6, 7]
+print ("Given array is", end="\n")
+printList(arr)
+tree_sort(arr)
+print("Sorted array is: ", end="\n")
+printList(arr)