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algorithms/tree/bst/BSTIterator.py at master · Dingxiaofei2017/algorithms · GitHub
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Dingxiaofei2017
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algorithms
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algorithms
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tree
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bst
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BSTIterator.py
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24 lines (17 loc) · 454 Bytes
master
Breadcrumbs
algorithms
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tree
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bst
/
BSTIterator.py
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class
BSTIterator
:
def
__init__
(
self
,
root
):
self
.
stack
=
[]
while
root
:
self
.
stack
.
append
(
root
)
root
=
root
.
left
def
has_next
(
self
):
return
bool
(
self
.
stack
)
def
next
(
self
):
node
=
stack
.
pop
()
tmp
=
node
if
tmp
.
right
:
tmp
=
tmp
.
right
while
tmp
:
self
.
stack
.
append
(
tmp
)
tmp
=
tmp
.
left
return
node
.
val
You can’t perform that action at this time.
