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A small Python 3.5+ library to make debugging LeetCode binary tree, linked list and matrix problems more convenient.
A small Python 3.5+ library to make debugging LeetCode binary tree, linked list and matrix problems more convenient.
from leetnode import TreeNode, build_btree
btree_node = TreeNode('val')
btree1 = build_btree([3, 9, 20, 8, 16, 15, 7, 1, 2, None, None, 3, None, None, None, None, None, 12])
or
btree2 = TreeNode.from_list(['a', 'b', 'cd', None, 'ef', 'gh', 'i', None, None, None, None, 'jkl', 'mn', 'o'])
or, from a JSON string
btree3 = TreeNode.from_list('[1, null, 555555, null, 43, 1]')
>>> print(btree1)
[3, 9, 20, 8, 16, 15, 7, 1, 2, None, None, 3, None, None, None, None, None, 12]
>>> print(btree2)
['a', 'b', 'cd', None, 'ef', 'gh', 'i', None, None, None, None, 'jkl', 'mn', 'o']
>>> print(btree3)
[1, None, 555555, None, 43, 1]
>>> print(btree1.tree_string())
___3_____
/ \
_____9 _20
/ \ / \
8___ 16 15 7
/ \ /
1 _2 3
/
12
>>> print(btree2.tree_string())
______'a'______
/ \
'b'_ __'cd'___________
\ / \
'ef' 'gh' __'i'_
/ \
_'jkl' 'mn'
/
'o'
>>> print(btree3.tree_string())
1__
\
555555__
\
43
/
1
from leetnode import ListNode, build_linked_list
list_node = ListNode('val')
llist1 = build_linked_list(['a', 'b', 'c', 'd'])
or
llist2 = ListNode.from_list([1, 2, 3, 4, 5])
or, from a JSON string
llist3 = ListNode.from_list('["e", "f", "g", "h"]')
>>> print(llist1)
['a' -> 'b' -> 'c' -> 'd']
>>> print(llist2)
[1 -> 2 -> 3 -> 4 -> 5]
>>> print(llist3)
['e' -> 'f' -> 'g' -> 'h']
>>> for node in llist1:
... print(node.val + node.next.val if node.next is not None else node.val)
...
ab
bc
cd
d
>>> mat1 = [[1.2, 2.33, 3.0], [4.5, 6.7777, 8], [9.0, 10.98, 111.42]]
>>> mat2 = [[3, 0, 8, 4], [2, 2340, 5, 7], [97, 432, 6, 3], [0, 3, 1, 13]]
>>> mat3 = mat3 = '[["a", "b", "ccc"], ["dd", "e", "ff"], ["g", "h", "i"]]'
>>> print(matrix_to_string(mat1))
[ [ 1.2 , 2.33 , 3.0 ],
[ 4.5 , 6.7777, 8 ],
[ 9.0 , 10.98 , 111.42 ] ]
>>> print(matrix_to_string(mat2))
[ [ 3, 0, 8, 4 ],
[ 2, 2340, 5, 7 ],
[ 97, 432, 6, 3 ],
[ 0, 3, 1, 13 ] ]
>>> print(matrix_to_string(mat3))
[ [ 'a' , 'b' , 'ccc' ],
[ 'dd' , 'e' , 'ff' ],
[ 'g' , 'h' , 'i' ] ]
FAQs
A small Python 3.5+ library to make debugging LeetCode binary tree, linked list and matrix problems more convenient.
We found that leetnode demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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