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algorithm/Week_03/id_119/LeetCode_589.119.cpp at master · feixiangcode/algorithm · GitHub
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algorithm
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Week_03
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id_119
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LeetCode_589.119.cpp
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algorithm
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Week_03
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id_119
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LeetCode_589.119.cpp
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class
Solution
{
public:
vector<
int
>
preorder
(Node* root) {
if
(!root)
return
vector<
int
>();
vector<
int
> res;
stack<Node*> s;
s.
push
(root);
while
(!s.
empty
()) {
Node* tmp = s.
top
();
s.
pop
();
res.
push_back
(tmp->
val
);
for
(
int
i=tmp->
children
.
size
()-
1
; i>=
0
; i--) {
s.
push
(tmp->
children
[i]);
}
}
return
res;
}
};
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