

import numpy as np
import torch
from torch.utils.data import Dataset

from utils import logger





class  __UpperCAmelCase					(	lowerCAmelCase__						):



			def __init__(							self							:					Optional[int],		__A							:					List[str],		__A							:					str						):
					UpperCAmelCase	:							Dict						=			params

					UpperCAmelCase	:							Any						=			np.array(_SCREAMING_SNAKE_CASE						)
					UpperCAmelCase	:							Dict						=			np.array([len(_SCREAMING_SNAKE_CASE						) for t in data]						)

					self.check()
					self.remove_long_sequences()
					self.remove_empty_sequences()
					self.remove_unknown_sequences()
					self.check()
					self.print_statistics()



			def __getitem__(							self							:					str,		__A							:					Dict						):
					return (self.token_ids[index], self.lengths[index])



			def __len__(							self							:					Any						):
					return len(self.lengths						)



			def 	__magic_name__   (							self							:					Dict						):
					assert len(self.token_ids						) == len(self.lengths						)
					assert all(self.lengths[i] == len(self.token_ids[i]						) for i in range(len(self.lengths						)						)						)



			def 	__magic_name__   (							self							:					List[Any]						):
					UpperCAmelCase	:							List[Any]						=			self.params.max_model_input_size
					UpperCAmelCase	:							Any						=			self.lengths > max_len
					logger.info(F'''Splitting {sum(_SCREAMING_SNAKE_CASE						)} too long sequences.'''						)

					def divide_chunks(__A							:					Union[str, Any],		__A							:					Any						):
							return [l[i : i + n] for i in range(0,		len(_SCREAMING_SNAKE_CASE						),		_SCREAMING_SNAKE_CASE						)]

					UpperCAmelCase	:							Tuple						=			[]
					UpperCAmelCase	:							Tuple						=			[]
					if self.params.mlm:
							UpperCAmelCase			,						UpperCAmelCase	:							Optional[Any]						=			self.params.special_tok_ids['''cls_token'''], self.params.special_tok_ids['''sep_token''']
					else:
							UpperCAmelCase			,						UpperCAmelCase	:							Optional[int]						=			self.params.special_tok_ids['''bos_token'''], self.params.special_tok_ids['''eos_token''']

					for seq_, len_ in zip(self.token_ids,		self.lengths						):
							assert (seq_[0] == cls_id) and (seq_[-1] == sep_id), seq_
							if len_ <= max_len:
									new_tok_ids.append(seq_						)
									new_lengths.append(len_						)
							else:
									UpperCAmelCase	:							Optional[Any]						=			[]
									for sub_s in divide_chunks(seq_,		max_len - 2						):
											if sub_s[0] != cls_id:
													UpperCAmelCase	:							Any						=			np.insert(_SCREAMING_SNAKE_CASE,		0,		_SCREAMING_SNAKE_CASE						)
											if sub_s[-1] != sep_id:
													UpperCAmelCase	:							Optional[Any]						=			np.insert(_SCREAMING_SNAKE_CASE,		len(_SCREAMING_SNAKE_CASE						),		_SCREAMING_SNAKE_CASE						)
											assert len(_SCREAMING_SNAKE_CASE						) <= max_len
											assert (sub_s[0] == cls_id) and (sub_s[-1] == sep_id), sub_s
											sub_seqs.append(_SCREAMING_SNAKE_CASE						)

									new_tok_ids.extend(_SCREAMING_SNAKE_CASE						)
									new_lengths.extend([len(_SCREAMING_SNAKE_CASE						) for l in sub_seqs]						)

					UpperCAmelCase	:							Dict						=			np.array(_SCREAMING_SNAKE_CASE						)
					UpperCAmelCase	:							Dict						=			np.array(_SCREAMING_SNAKE_CASE						)



			def 	__magic_name__   (							self							:					Dict						):
					UpperCAmelCase	:							Optional[Any]						=			len(self						)
					UpperCAmelCase	:							Optional[int]						=			self.lengths > 1_1
					UpperCAmelCase	:							str						=			self.token_ids[indices]
					UpperCAmelCase	:							Optional[int]						=			self.lengths[indices]
					UpperCAmelCase	:							List[Any]						=			len(self						)
					logger.info(F'''Remove {init_size - new_size} too short (<=11 tokens) sequences.'''						)



			def 	__magic_name__   (							self							:					str						):
					if "unk_token" not in self.params.special_tok_ids:
							return
					else:
							UpperCAmelCase	:							int						=			self.params.special_tok_ids['''unk_token''']
					UpperCAmelCase	:							Union[str, Any]						=			len(self						)
					UpperCAmelCase	:							int						=			np.array([np.count_nonzero(a == unk_token_id						) for a in self.token_ids]						)
					UpperCAmelCase	:							Optional[int]						=			(unk_occs / self.lengths) < 0.5
					UpperCAmelCase	:							List[str]						=			self.token_ids[indices]
					UpperCAmelCase	:							List[Any]						=			self.lengths[indices]
					UpperCAmelCase	:							str						=			len(self						)
					logger.info(F'''Remove {init_size - new_size} sequences with a high level of unknown tokens (50%).'''						)



			def 	__magic_name__   (							self							:					List[Any]						):
					if not self.params.is_master:
							return
					logger.info(F'''{len(self						)} sequences'''						)
					# data_len = sum(self.lengths)
					# nb_unique_tokens = len(Counter(list(chain(*self.token_ids))))
					# logger.info(f'{data_len} tokens ({nb_unique_tokens} unique)')

					# unk_idx = self.params.special_tok_ids['unk_token']
					# nb_unknown = sum([(t==unk_idx).sum() for t in self.token_ids])
					# logger.info(f'{nb_unknown} unknown tokens (covering {100*nb_unknown/data_len:.2f}% of the data)')





			def 	__magic_name__   (							self							:					Any,		__A							:					Dict						):
					UpperCAmelCase	:							Optional[int]						=			[t[0] for t in batch]
					UpperCAmelCase	:							int						=			[t[1] for t in batch]
					assert len(_SCREAMING_SNAKE_CASE						) == len(_SCREAMING_SNAKE_CASE						)

					# Max for paddings
					UpperCAmelCase	:							Optional[Any]						=			max(_SCREAMING_SNAKE_CASE						)

					# Pad token ids
					if self.params.mlm:
							UpperCAmelCase	:							List[Any]						=			self.params.special_tok_ids['''pad_token''']
					else:
							UpperCAmelCase	:							Tuple						=			self.params.special_tok_ids['''unk_token''']
					UpperCAmelCase	:							Tuple						=			[list(t.astype(_SCREAMING_SNAKE_CASE						)						) + [pad_idx] * (max_seq_len_ - len(_SCREAMING_SNAKE_CASE						)) for t in token_ids]
					assert len(tk_						) == len(_SCREAMING_SNAKE_CASE						)
					assert all(len(_SCREAMING_SNAKE_CASE						) == max_seq_len_ for t in tk_						)

					UpperCAmelCase	:							Union[str, Any]						=			torch.tensor(tk_						)  # (bs, max_seq_len_)
					UpperCAmelCase	:							int						=			torch.tensor(_SCREAMING_SNAKE_CASE						)  # (bs)
					return tk_t, lg_t








from __future__ import annotations

import queue





class  __UpperCAmelCase					:



   def __init__(							self							:					str,		__A							:					Union[str, Any]						):
     UpperCAmelCase	:							Dict						=			data
     UpperCAmelCase	:							Tuple						=			None
     UpperCAmelCase	:							Any						=			None






def       a__					(		)  ->						TreeNode:
  print('''\n********Press N to stop entering at any point of time********\n'''      )
  UpperCAmelCase	:							Any						=			input('''Enter the value of the root node: '''      ).strip().lower()
  UpperCAmelCase	:							queue.Queue						=			queue.Queue()
  UpperCAmelCase	:							Tuple						=			TreeNode(int(UpperCAmelCase      )      )
  q.put(UpperCAmelCase      )
  while not q.empty():
    UpperCAmelCase	:							int						=			q.get()
    UpperCAmelCase	:							Union[str, Any]						=			f'''Enter the left node of {node_found.data}: '''
    UpperCAmelCase	:							List[Any]						=			input(UpperCAmelCase      ).strip().lower() or '''n'''
    if check == "n":
      return tree_node
    UpperCAmelCase	:							List[str]						=			TreeNode(int(UpperCAmelCase      )      )
    UpperCAmelCase	:							List[str]						=			left_node
    q.put(UpperCAmelCase      )
    UpperCAmelCase	:							List[Any]						=			f'''Enter the right node of {node_found.data}: '''
    UpperCAmelCase	:							List[Any]						=			input(UpperCAmelCase      ).strip().lower() or '''n'''
    if check == "n":
      return tree_node
    UpperCAmelCase	:							Dict						=			TreeNode(int(UpperCAmelCase      )      )
    UpperCAmelCase	:							Dict						=			right_node
    q.put(UpperCAmelCase      )
  raise

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  print(node.data    ,			end=''','''      )
  pre_order(node.left      )
  pre_order(node.right      )

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  in_order(node.left      )
  print(node.data    ,			end=''','''      )
  in_order(node.right      )

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  post_order(node.left      )
  post_order(node.right      )
  print(node.data    ,			end=''','''      )

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  UpperCAmelCase	:							queue.Queue						=			queue.Queue()
  q.put(UpperCAmelCase      )
  while not q.empty():
    UpperCAmelCase	:							List[Any]						=			q.get()
    print(node_dequeued.data    ,			end=''','''      )
    if node_dequeued.left:
      q.put(node_dequeued.left      )
    if node_dequeued.right:
      q.put(node_dequeued.right      )

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  UpperCAmelCase	:							queue.Queue						=			queue.Queue()
  q.put(UpperCAmelCase      )
  while not q.empty():
    UpperCAmelCase	:							int						=			[]
    while not q.empty():
      UpperCAmelCase	:							List[str]						=			q.get()
      print(node_dequeued.data    ,			end=''','''      )
      if node_dequeued.left:
        list_.append(node_dequeued.left      )
      if node_dequeued.right:
        list_.append(node_dequeued.right      )
    print()
    for node in list_:
      q.put(UpperCAmelCase      )

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  UpperCAmelCase	:							list[TreeNode]						=			[]
  UpperCAmelCase	:							List[str]						=			node
  while n or stack:
    while n:  # start from root node, find its left child
      print(n.data    ,			end=''','''      )
      stack.append(UpperCAmelCase      )
      UpperCAmelCase	:							Dict						=			n.left
    # end of while means current node doesn't have left child
    UpperCAmelCase	:							Union[str, Any]						=			stack.pop()
    # start to traverse its right child
    UpperCAmelCase	:							List[str]						=			n.right

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  UpperCAmelCase	:							list[TreeNode]						=			[]
  UpperCAmelCase	:							Any						=			node
  while n or stack:
    while n:
      stack.append(UpperCAmelCase      )
      UpperCAmelCase	:							Dict						=			n.left
    UpperCAmelCase	:							Optional[int]						=			stack.pop()
    print(n.data    ,			end=''','''      )
    UpperCAmelCase	:							Any						=			n.right

def       a__					(		UpperCAmelCase							:      TreeNode      )  ->						None:
  if not isinstance(UpperCAmelCase    ,			UpperCAmelCase      ) or not node:
    return
  UpperCAmelCase			,						UpperCAmelCase	:							Dict						=			[], []
  UpperCAmelCase	:							Any						=			node
  stacka.append(UpperCAmelCase      )
  while stacka:  # to find the reversed order of post order, store it in stack2
    UpperCAmelCase	:							Union[str, Any]						=			stacka.pop()
    if n.left:
      stacka.append(n.left      )
    if n.right:
      stacka.append(n.right      )
    stacka.append(UpperCAmelCase      )
  while stacka:  # pop up from stack2 will be the post order
    print(stacka.pop().data    ,			end=''','''      )

def       a__					(		UpperCAmelCase							:      str = ""    ,			UpperCAmelCase							:      int=50    ,			UpperCAmelCase							:      Union[str, Any]="*"      )  ->						str:
  if not s:
    return "\n" + width * char
  UpperCAmelCase			,						UpperCAmelCase	:							int						=			divmod(width - len(UpperCAmelCase      ) - 2    ,			2      )
  return f'''{left * char} {s} {(left + extra) * char}'''


if __name__ == "__main__":
     import doctest

     doctest.testmod()
     print(prompt("Binary Tree Traversals"))

     _lowerCamelCase    :       TreeNode        =							build_tree()
     print(prompt("Pre Order Traversal"))
     pre_order(node)
     print(prompt() + "\n")

     print(prompt("In Order Traversal"))
     in_order(node)
     print(prompt() + "\n")

     print(prompt("Post Order Traversal"))
     post_order(node)
     print(prompt() + "\n")

     print(prompt("Level Order Traversal"))
     level_order(node)
     print(prompt() + "\n")

     print(prompt("Actual Level Order Traversal"))
     level_order_actual(node)
     print("*" * 5_0 + "\n")

     print(prompt("Pre Order Traversal - Iteration Version"))
     pre_order_iter(node)
     print(prompt() + "\n")

     print(prompt("In Order Traversal - Iteration Version"))
     in_order_iter(node)
     print(prompt() + "\n")

     print(prompt("Post Order Traversal - Iteration Version"))
     post_order_iter(node)
     print(prompt())





