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45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
# Tree_sort algorithm
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# Build a BST and in order traverse.
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class node():
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# BST data structure
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def __init__(self, val):
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self.val = val
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self.left = None
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self.right = None
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def insert(self,val):
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if self.val:
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if val < self.val:
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if self.left == None:
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self.left = node(val)
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else:
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self.left.insert(val)
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elif val > self.val:
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if self.right == None:
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self.right = node(val)
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else:
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self.right.insert(val)
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else:
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self.val = val
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def inorder(root, res):
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# Recursive travesal
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if root:
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inorder(root.left,res)
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res.append(root.val)
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inorder(root.right,res)
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def treesort(arr):
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# Build BST
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if len(arr) == 0:
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return arr
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root = node(arr[0])
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for i in range(1,len(arr)):
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root.insert(arr[i])
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# Traverse BST in order.
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res = []
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inorder(root,res)
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return res
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print(treesort([10,1,3,2,9,14,13])) |