How to use preorder method in avocado

Best Python code snippet using avocado_python

tree_from_preorder_inorder.py

Source:tree_from_preorder_inorder.py Github

copy

Full Screen

1from typing import List2from binary_tree_node import BinaryTreeNode3from test_framework import generic_test4def binary_tree_from_preorder_inorder(preorder: List[int],5 inorder: List[int]) -> BinaryTreeNode:6 node_to_inorder_idx = {data: i for i, data in enumerate(inorder)}7 # Builds the subtree with preorder[preorder_start:preorder_end] and8 # inorder[inorder_start:inorder_end].9 def binary_tree_from_preorder_inorder_helper(preorder_start, preorder_end,10 inorder_start, inorder_end):11 if preorder_end <= preorder_start or inorder_end <= inorder_start:12 return None13 root_inorder_idx = node_to_inorder_idx[preorder[preorder_start]]14 left_subtree_size = root_inorder_idx - inorder_start15 return BinaryTreeNode(16 preorder[preorder_start],17 # Recursively builds the left subtree.18 binary_tree_from_preorder_inorder_helper(19 preorder_start + 1, preorder_start + 1 + left_subtree_size,20 inorder_start, root_inorder_idx),21 # Recursively builds the right subtree.22 binary_tree_from_preorder_inorder_helper(23 preorder_start + 1 + left_subtree_size, preorder_end,24 root_inorder_idx + 1, inorder_end))25 return binary_tree_from_preorder_inorder_helper(preorder_start=0,26 preorder_end=len(preorder),27 inorder_start=0,28 inorder_end=len(inorder))29if __name__ == '__main__':30 exit(31 generic_test.generic_test_main('tree_from_preorder_inorder.py',32 'tree_from_preorder_inorder.tsv',...

Full Screen

Full Screen

tree_from_preorder_with_null.py

Source:tree_from_preorder_with_null.py Github

copy

Full Screen

2from typing import List3from binary_tree_node import BinaryTreeNode4from test_framework import generic_test5from test_framework.test_utils import enable_executor_hook6def reconstruct_preorder(preorder: List[int]) -> BinaryTreeNode:7 def reconstruct_preorder_helper(preorder_iter):8 subtree_key = next(preorder_iter)9 if subtree_key is None:10 return None11 # Note that reconstruct_preorder_helper updates preorder_iter. So the12 # order of following two calls are critical.13 left_subtree = reconstruct_preorder_helper(preorder_iter)14 right_subtree = reconstruct_preorder_helper(preorder_iter)15 return BinaryTreeNode(subtree_key, left_subtree, right_subtree)16 return reconstruct_preorder_helper(iter(preorder))17@enable_executor_hook18def reconstruct_preorder_wrapper(executor, data):19 data = [None if x == 'null' else int(x) for x in data]20 return executor.run(functools.partial(reconstruct_preorder, data))...

Full Screen

Full Screen

construct-binary-search-tree-from-preorder-traversal.py

Source:construct-binary-search-tree-from-preorder-traversal.py Github

copy

Full Screen

1class Solution:2 def bstFromPreorder(self, preorder: List[int]) -> Optional[TreeNode]:3 def makeTree(node, preorder, l, r, idx):4 if idx >= len(preorder) or r < preorder[idx] or preorder[idx] < l: return idx5 if preorder[idx] < node.val:6 nextNode = TreeNode(preorder[idx], None, None)7 node.left = nextNode8 idx = makeTree(nextNode, preorder, l, node.val, idx + 1)9 if idx >= len(preorder) or r < preorder[idx] or preorder[idx] < l: return idx10 if preorder[idx] > node.val:11 nextNode = TreeNode(preorder[idx], None, None)12 node.right = nextNode13 idx = makeTree(nextNode, preorder, node.val, r, idx + 1)14 return idx15 root = TreeNode(preorder[0], None, None)16 makeTree(root, preorder, 0, 10 ** 8 + 1, 1)...

Full Screen

Full Screen

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.

LambdaTest Learning Hubs:

YouTube

You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

Run avocado automation tests on LambdaTest cloud grid

Perform automation testing on 3000+ real desktop and mobile devices online.

Try LambdaTest Now !!

Get 100 minutes of automation test minutes FREE!!

Next-Gen App & Browser Testing Cloud

Was this article helpful?

Helpful

NotHelpful