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79 lines
1.9 KiB
Python
79 lines
1.9 KiB
Python
"""
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File: print_util.py
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Created Time: 2021-12-11
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Author: Krahets (krahets@163.com), msk397 (machangxinq@gmail.com)
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"""
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from .tree_node import TreeNode, list_to_tree
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from .list_node import ListNode, linked_list_to_list
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def print_matrix(mat: list[list[int]]):
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"""Print a matrix"""
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s = []
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for arr in mat:
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s.append(" " + str(arr))
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print("[\n" + ",\n".join(s) + "\n]")
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def print_linked_list(head: ListNode | None):
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"""Print a linked list"""
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arr: list[int] = linked_list_to_list(head)
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print(" -> ".join([str(a) for a in arr]))
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class Trunk:
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def __init__(self, prev, string: str | None = None):
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self.prev = prev
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self.str = string
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def show_trunks(p: Trunk | None):
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if p is None:
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return
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show_trunks(p.prev)
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print(p.str, end="")
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def print_tree(root: TreeNode | None, prev: Trunk | None = None, is_right: bool = False):
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"""
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Print a binary tree
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This tree printer is borrowed from TECHIE DELIGHT
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https://www.techiedelight.com/c-program-print-binary-tree/
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"""
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if root is None:
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return
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prev_str = " "
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trunk = Trunk(prev, prev_str)
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print_tree(root.right, trunk, True)
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if prev is None:
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trunk.str = "———"
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elif is_right:
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trunk.str = "/———"
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prev_str = " |"
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else:
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trunk.str = "\———"
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prev.str = prev_str
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show_trunks(trunk)
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print(" " + str(root.val))
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if prev:
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prev.str = prev_str
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trunk.str = " |"
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print_tree(root.left, trunk, False)
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def print_dict(hmap: dict):
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"""Print a dict"""
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for key, value in hmap.items():
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print(key, "->", value)
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def print_heap(heap: list[int]):
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"""Print a heap both in array and tree representations"""
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print("堆的数组表示：", heap)
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print("堆的树状表示：")
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root: TreeNode | None = list_to_tree(heap)
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print_tree(root)
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