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Solution.cs
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35 lines (31 loc) · 831 Bytes
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public class Solution
{
public int MaxLevelSum(TreeNode root)
{
long maxSum = long.MinValue;
int level = 0;
int ans = 0;
if (root is null) return ans;
Queue<TreeNode> queue = [];
queue.Enqueue(root);
while (queue.Count > 0)
{
long sum = 0;
var length = queue.Count;
level++;
for (int i = 0; i < length; i++)
{
var node = queue.Dequeue();
sum += node.val;
if (node.left is not null) queue.Enqueue(node.left);
if (node.right is not null) queue.Enqueue(node.right);
}
if (sum > maxSum)
{
maxSum = sum;
ans = level;
}
}
return ans;
}
}