def insert(self, key: int) -> bool:
if self.__root is None:
self.__root = Node(key)
return True
current = self.__root
while True:
if current.key == key:
# node has same key does not allowed in BTS.
return False
parent = current
# happened when the new key is smaller than the root of a sub-tree.
should_go_left = current.key > key
if should_go_left:
current = current.left
else:
current = current.right
if current is None:
new_node = Node(key, parent)
if should_go_left:
parent.left = new_node
else:
parent.right = new_node
self.__re_balance(parent)
break
return True
def _insert(self, key, value, currentNode):
"""Insert helper method."""
if key < currentNode.key:
if currentNode.hasLeftChild():
self._insert(key, value, currentNode.leftChild)
else:
currentNode.leftChild = Node(key, value, parent=currentNode)
else:
if currentNode.hasRightChild():
self._insert(key, value, currentNode.rightChild)
else:
currentNode.rightChild = Node(key, value, parent=currentNode)
def insert(self, key, value):
"""Insert a new node into tree."""
if self.root:
self._insert(key, value, self.root)
else:
self.root = Node(key, value)
self.size += 1
def make_node_queue(nList):
queue = []
for cell in nList:
print(str(cell[0]) + " " + str(cell[1]))
n = Node(cell[0], cell[1])
queue.append(n)
return queue
def __init__(self, competitors):
self.competitors = competitors
self.actual_round_id = 0
self.rounds = [
Node(left_child=competitors[0], right_child=competitors[1])
for i in range(2)
]
self.final = None
self.is_end = False
def get_topn_nodes(tag_dict, parent_node):
"""Get top N nodes based on tag probabilities"""
top_n = []
dictsum = sum(tag_dict.values())
for tag_pair in sorted(tag_dict.items(), key=itemgetter(1), reverse=True)[:config.TOPN]:
new_node = Node(tag_pair[0], parent_node, tag_pair[1]/dictsum,
np.math.log(tag_pair[1]/dictsum, 10) + parent_node.cum_log_prob)
top_n.append(new_node)
return top_n
def preorder_to_bst(l):
if not l:
return None
ro = Node(l[0])
ro.l = preorder_to_bst([e for e in l if e < l[0]])
ro.r = preorder_to_bst([e for e in l if e > l[0]])
return ro
def main():
root = Node(data=1)
root = add_right(2, root)
root.right = add_right(5, root.right)
root.right.right = add_right(6, root.right.right)
root.right.right = add_left(3, root.right.right)
root.right.right.left = add_right(4, root.right.right.left)
post_order(root)
print()
def simulate(self):
"""
Run G consecutive games (aka. episodes) of the self.game_type using fixed values for the game parameters:
N and K for NIM, B_init for Ledge. When the G games have finished, your simulator must summarize the win-loss
statistics. A typical summary (for G = 50) would be a simple statement such as: Player 1 wins 40 of 50 games
(80%).
"""
wins = 0 # Number of times player 1 wins
# Actual games being played
for episode in range(1, self.episodes + 1):
logging.info("Episode: {}".format(episode))
# The actual game being played this episode
game = get_new_game(self.game_type,
self.game_config,
verbose=self.verbose)
# For each game, a new Monte Carlo Search Tree is made
mcts = MonteCarloSearchTree(self.game_type, self.game_config)
state, player = game.get_current_state(), self.get_start_player()
mcts.set_root(Node(state, None, player=player))
# While the actual game is not finished
while not game.is_winning_state():
# Every time we shall select a new action, we perform M number of simulations in MCTS
for _ in range(self.num_sim):
# One iteration of Monte Carlo Tree Search consists of four steps
# 1. Selection
leaf = mcts.selection()
# 2. Expand selected leaf node
sim_node = mcts.expansion(leaf)
# 3. Simulation
z = mcts.simulation(sim_node)
# 4. Backward propagation
mcts.backward(sim_node, z)
# Now use the search tree to choose next action
new_root = mcts.select_actual_action(player)
# Perform this action, moving the game from state s -> s´
game.perform_action(player, new_root.action)
# Update player
player = get_next_player(player)
# Set new root of MCST
mcts.set_root(new_root)
# If next player is 2 and we are in a win state, player 1 got us in a win state
if player == 2:
wins += 1
# Report statistics
logging.info("Player1 wins {} of {} games ({}%)".format(
wins, self.episodes, round(100 * (wins / self.episodes))))
def __insert(self, root, vti):
if not root:
return Node(vti)
if vti <= root.value:
root.left = self.__insert(root.left, vti)
else:
root.right = self.__insert(root.right, vti)
return root
def get_child_nodes(self, state):
"""
Given the state, return all child nodes possible
:param state:
:return:
"""
legal_actions = self.game.get_legal_actions(state)
new_states = [
self.game.get_next_state(state, action) for action in legal_actions
]
return [
Node(state, action)
for state, action in zip(new_states, legal_actions)
]
def _insert(self, val, node):
"""
a basic recursive function for insertion:
* insert a node at a leaf node that found by binary searching
for the right place for the value.
* doesn't maintain the balance of the tree
"""
if node == None:
return Node(val, None, None)
else:
if node.val > val:
node.left = self._insert(val, node.left)
elif node.val < val:
node.right = self._insert(val, node.right)
return node
def tree_dfs_builder(records, node_builder, children_splitter, max_depth,
curr_depth, child_id, continue_deepening):
"""
Build a tree in a dfs manner.
records - list of elements that we are working on a current level
node_builder(records, curr_depth, child_id) - procedure that builds content of a node based on a subset of records
children_splitter(records, curr_depth, child_id) - how to split the elements amongst the children
max_depth - when this depth is reached, then stop building further depths
curr_depth - current depth of a current node
child_id - identifier, which lets node_builder and children_splitter distinguish the important data in the records that are being passed;
it's up to the user how to use this information
continue_deepening(child_id) - function that answers to a question whether a child_id should be further divided
"""
PRINTER("[tree_dfs_builder]: depth: " + str(curr_depth) + " child_id: " +
str(child_id))
PRINTER("[tree_dfs_builder]: creating a root node...")
node = Node()
node.content = node_builder(records, curr_depth, child_id)
#PRINTER("[tree_dfs_builder]: node.content"+str(node.content))
#PRINTER("[tree_dfs_builder]: for each child of a child: "+str(child_id)+" "+str(continue_deepening(child_id)))
if curr_depth == 0 or (curr_depth < max_depth
and continue_deepening(child_id)):
PRINTER("[tree_dfs_builder]: splitting child data for child_id: " +
str(child_id))
child_data = children_splitter(records, curr_depth, child_id)
#PRINTER("[tree_dfs_builder]: child_data"+str(child_data))
node.children = {}
#for each child=classification code on that level
for child_id in child_data.iterkeys():
#PRINTER("[tree_dfs_builder]: child_id"+child_id)
node.children[child_id] = tree_dfs_builder(
child_data[child_id], node_builder, children_splitter,
max_depth, curr_depth + 1, child_id, continue_deepening)
return node
def main():
tree = BinarySearchTree()
"""
data = [7, 1, 2, 3, 4, 5, 6, 8]
data = [1, 2, 5, 3, 6, 4]
t = 6
for i in range(t):
x = data[i]
tree.create(x)
"""
tree.root = Node(1)
tree.root.left = Node(2)
tree.root.right = Node(3)
tree.root.left.left = Node(4)
tree.root.left.right = Node(5)
tree.root.right.left = Node(6)
tree.root.right.right = Node(7)
top_view(tree.root)
def build_tree(presentation):
#init new tree
huffmanT = HuffmanTree()
#check if presentation length is even
chars = presentation.keys()
if len(chars) % 2 == 1:
values = presentation.values()
presentation[None] = max(values) + 1
#sort the key by values
sortedP = sort_dic(presentation)
nodeQueue = make_node_queue(sortedP)
while (1 < len(nodeQueue)):
n1 = nodeQueue.pop()
n2 = nodeQueue.pop()
# print("lson " + str(n1.get_count()) + " rson " + str(n2.get_count()))
father = Node("", 0, n1, n2)
nodeQueue.append(father)
# print("father " + str(father.get_count()))
#sort queue
sort_queue(nodeQueue)
huffmanT.set_root(nodeQueue.pop())
huffmanT.set_presentation(huffmanT.get_root())
return huffmanT
def has_next(self):
if len(self.cache) > 0:
return True
else:
return False
def get_next(self):
output_node = self.cache.pop()
if output_node.left is not None:
current_node = output_node.left
self.cache.append(current_node)
while current_node.right is not None:
self.cache.append(current_node.right)
current_node = current_node.right
return output_node
node1 = Node(2)
node2 = Node(3)
node12 = Node(1, node1, node2)
node3 = Node(7)
node03 = Node(9, None, node3)
node_root = Node(6, node12, node03)
x = postorder(node_root)
while x.has_next():
print x.get_next().value
def __init__(self, competitor1, competitor2):
self.round = Node(left_child=competitor1, right_child=competitor2)
def fit(self, X, y, min_leaf = 5): self.dtree = Node(X, y, np.array(np.arange(len(y))), min_leaf) return self
from typing import List
from tree_node import Node
class Solution:
def __init__(self):
self.result = []
def preorder(self, root: Node) -> List[int]:
if root is None:
return
self.result.append(root.val)
if root.children is not None:
for node in root.children:
self.preorder(node)
return self.result
if __name__ == '__main__':
root = Node(val=1,
children=[
Node(val=3,
children=[
Node(val=5, children=None),
Node(val=6, children=None)
]),
Node(val=2, children=None),
Node(val=4, children=None)
])
print(Solution().preorder(root=None))
def __init__(self, root_value=5):
self.root = Node(root_value)
self.node_count = 1
self.level = 0
# Declare all variables
TEST_FILE = sys.argv[1]
BOUNDARY_FILE = sys.argv[2]
MODEL_FILE = sys.argv[3]
SYS_OUTPUT = sys.argv[4]
config.BEAM_SIZE = int(sys.argv[5])
config.TOPN = int(sys.argv[6])
config.TOPK = int(sys.argv[7])
data = FileParser(TEST_FILE, BOUNDARY_FILE, MODEL_FILE)
# Beam search
for sent_idx in range(len(data.test_set)):
total_paths = {}
data.final_probs[sent_idx] = {}
root = Node('BOS', None, None, 0)
history = copy.deepcopy(data.test_set[sent_idx][0][1])
tag1 = 'prevTwoTags=BOS+BOS'
tag2 = 'prevT=BOS'
base_weights = calc_base_weights(data.weights, data.tagset, history)
tag_dict = calc_tag_probs(data.weights, base_weights, tag1, tag2)
top_n = get_topn_nodes(tag_dict, root)
pruned_nodes = prune_nodes(top_n, total_paths)
data.final_probs[sent_idx][0] = get_class_label(pruned_nodes)
for word_idx in range(1, data.sentence_lengths[sent_idx]):
nodelist = []
history = copy.deepcopy(data.test_set[sent_idx][word_idx][1])
base_weights = calc_base_weights(data.weights, data.tagset, history)
for node in total_paths[word_idx - 1]:
height
"""
from tree_node import Node
# Get tree height
def get_height(root):
if root is None:
return 0
left = get_height(root.left)
right = get_height(root.right)
return 1 + max(left, right)
if __name__ == '__main__':
root = Node(10)
root.left = Node(7)
root.right = Node(8)
root.left.left = Node(1)
root.left.right = Node(3)
root.right.left = Node(5)
root.right.right = Node(7)
root.left.left.left = Node(-1)
root.left.right.right = Node(2)
root.left.right.right.right = Node(4)
print(get_height(root))