From 80301657b305bcbd614d5294b1d483d31419755f Mon Sep 17 00:00:00 2001
From: ZongqinWang <1722249371@qq.com>
Date: Thu, 19 May 2022 12:29:12 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=20515.=E5=9C=A8=E6=AF=8F?=
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 =?UTF-8?q?=E5=80=BC=20Scala=E7=89=88=E6=9C=AC?=
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---
 problems/0102.二叉树的层序遍历.md | 26 +++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/problems/0102.二叉树的层序遍历.md b/problems/0102.二叉树的层序遍历.md
index ab8f2e57..db27c73d 100644
--- a/problems/0102.二叉树的层序遍历.md
+++ b/problems/0102.二叉树的层序遍历.md
@@ -1433,6 +1433,32 @@ func largestValues(_ root: TreeNode?) -> [Int] {
 }
 ```
 
+Scala:
+```scala
+// 515.在每个树行中找最大值
+object Solution {
+  import scala.collection.mutable
+  def largestValues(root: TreeNode): List[Int] = {
+    val res = mutable.ListBuffer[Int]()
+    if (root == null) return res.toList
+    val queue = mutable.Queue[TreeNode]()
+    queue.enqueue(root)
+    while (!queue.isEmpty) {
+      var max = Int.MinValue // 初始化max为系统最小值
+      val len = queue.size
+      for (i <- 0 until len) {
+        val curNode = queue.dequeue()
+        max = math.max(max, curNode.value) // 对比求解最大值
+        if (curNode.left != null) queue.enqueue(curNode.left)
+        if (curNode.right != null) queue.enqueue(curNode.right)
+      }
+      res.append(max) // 将最大值放入结果集
+    }
+    res.toList
+  }
+}
+```
+
 # 116.填充每个节点的下一个右侧节点指针
 
 [力扣题目链接](https://leetcode-cn.com/problems/populating-next-right-pointers-in-each-node/)