Leetcode/src/main/java/com/fishercoder/solutions/secondthousand/_1602.java at master · fishercoder1534/Leetcode · GitHub

Name: Leetcode/src/main/java/com/fishercoder/solutions/secondthousand/_1602.java at master · fishercoder1534/Leetcode · GitHub
Rating: 4.5 (8440 reviews)
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packagecom.fishercoder.solutions.secondthousand;

importcom.fishercoder.common.classes.TreeNode;
importjava.util.LinkedList;
importjava.util.Queue;

publicclass_1602 {
publicstaticclassSolution1 {
publicTreeNodefindNearestRightNode(TreeNoderoot, TreeNodeu) {
Queue<TreeNode> q = newLinkedList<>();
q.offer(root);
while (!q.isEmpty()) {
intsize = q.size();
for (inti = 0; i < size; i++) {
TreeNodecurr = q.poll();
if (curr == u) {
if (i == size - 1) {
returnnull;
 } else {
returnq.poll();
 }
 }
if (curr.left != null) {
q.offer(curr.left);
 }
if (curr.right != null) {
q.offer(curr.right);
 }
 }
 }
returnnull;
 }
 }
}