来看这个题,https://leetcode.com/problems/…,要求常数空间,想了想,没想到,找了答案,是这样
class Solution {
public:
void connect(TreeLinkNode *root) {
if (!root) {
return;
}
TreeLinkNode dummy(-1);
for (TreeLinkNode *prev = &dumm…… 阅读全文
Populating Next Right Pointers in Each Node II
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