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Author: SAMRITIS

binary_tree.py

@@ -0,0 +1,60 @@
+class tree:
+    def __init__(self, data):
+        self.left = None
+        self.data = data
+        self.right = None
+    def node(self, data):
+        if self.data:
+            if self.data>data:
+                if self.left is None:
+                    self.left = tree(data)
+                else:
+                    self.left.node(data)
+            elif self.data<data:
+                if self.right is None:
+                    self.right = tree(data)
+                else:
+                    self.right.node(data)
+        else:
+            self.data = data
+
+    def show1(self):
+        if self.data:
+            print(self.data)
+            if self.left:
+                self.left.show1()
+            if self.right:
+                self.right.show1()
+        else:
+            return -1
+    def show2(self):
+        if self.data:
+            if self.left:
+                self.left.show2()
+            if self.right:
+                self.right.show2()
+            print(self.data)
+        else:
+            return -1
+    def show3(self):
+        if self.data:
+            if self.left:
+                self.left.show3()
+            print(self.data)
+            if self.right:
+                self.right.show3()
+        else:
+            return -1
+root = tree(10)
+root.node(50)
+root.node(30)
+root.node(80)
+root.node(5)
+root.node(2)
+root.node(7)
+print("Inorder")
+root.show3()
+print("Postorder")
+root.show2()
+print("Preorder")
+root.show1()