【LeetCode从零单排】No 114 Flatten Binary Tree to Linked List
题目
Given a binary tree, flatten it to a linked list in-place.
For example,
Given
1
/ \
2 5
/ \ \
3 4 6
The flattened tree should look like:
1
\
2
\
3
\
4
\
5
\
6
代码
public class Solution {
public void flatten(TreeNode root) {
if(root==null) return;
flatten(root.left);
flatten(root.right);
TreeNode temp=root.right;
if(root.left!=null){
root.right=root.left;
root.left=null;
while(root.right != null){
root=root.right;
}
root.right=temp;
}
}
}
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