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748624e5ee
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problems(cpp): add “1768. Merge Strings Alternately”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-19 00:17:54 +02:00 |
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d8009b9a4a
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problems(rs): add “1431. Kids With the Greatest Number of Candies”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-17 18:51:10 +02:00 |
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43d043b5e1
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problems(rs): add “303. Range Sum Query - Immutable”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-16 00:05:53 +02:00 |
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09a14a0e3d
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problems(rs): add “2218. Maximum Value of K Coins From Piles”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-15 19:29:45 +02:00 |
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01b25b0ffe
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problems(rs): add “516. Longest Palindromic Subsequence”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-14 22:40:09 +02:00 |
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2c3aa74565
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problems(rs): add “946. Validate Stack Sequences”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-13 19:24:05 +02:00 |
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551b7819cc
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problems(rs): add “71. Simplify Path”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-13 08:13:07 +02:00 |
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5a62aba9c1
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problems(cpp): add “2390. Removing Stars From a String”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-11 18:47:54 +02:00 |
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10b6b3dd69
|
problems(cpp): add “20. Valid Parentheses”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-10 20:03:58 +02:00 |
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1388a820e7
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problems(cpp): add “881. Boats to Save People”
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2023-04-10 12:21:07 +02:00 |
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ec2b3df836
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problems(cpp): add „100. Same Tree“
Signed-off-by: Matej Focko <me@mfocko.xyz>
|
2023-01-10 23:16:12 +01:00 |
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63dad4c93c
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problems(rs): add „451. Sort Characters By Frequency“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-12-03 22:41:54 +01:00 |
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5d51c78a08
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problems(cpp): add „1657. Determine if Two Strings Are Close“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-12-02 20:13:07 +01:00 |
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fb8f4944c8
|
problems(cpp): add „393. UTF-8 Validation“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-14 10:31:37 +02:00 |
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1700370e2f
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problems(rs): add „188. Best Time to Buy and Sell Stock IV“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-10 22:33:42 +02:00 |
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dd94963a2f
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problems(cpp): add „1448. Count Good Nodes in Binary Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-09 18:59:12 +02:00 |
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f7ebb9037d
|
problems(kt): add „2133. Check if Every Row and Column Contains All Numbers“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-09 18:58:35 +02:00 |
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1873ff8016
|
chore: update gitignore
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-09 18:57:31 +02:00 |
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e3888415f7
|
chore: fix formatting
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-09 18:56:13 +02:00 |
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d7f8f4fd7b
|
problems(rs): add „1996. The Number of Weak Characters in the Game“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-09 14:02:07 +02:00 |
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9f4f02ac24
|
problems(rs): add „94. Binary Tree Inorder Traversal“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-08 13:59:46 +02:00 |
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4838f221f3
|
problems(kt): add „606. Construct String from Binary Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-07 13:24:41 +02:00 |
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20e3625bd7
|
problems(cs): add „814. Binary Tree Pruning“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-06 18:35:48 +02:00 |
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23a0bb299a
|
problems(java): add „429. N-ary Tree Level Order Traversal“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-05 11:31:36 +02:00 |
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0bb6581d69
|
problems(cpp): add „987. Vertical Order Traversal of a Binary Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-04 23:02:44 +02:00 |
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b9d382731b
|
problems(cpp): add „967. Numbers With Same Consecutive Differences“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-03 23:52:07 +02:00 |
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227124b327
|
problems(cs): add „637. Average of Levels in Binary Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
diff --git a/problems/average-of-levels-in-binary-tree.cs b/problems/average-of-levels-in-binary-tree.cs
new file mode 100644
index 0000000..f2ba5aa
--- /dev/null
+++ b/problems/average-of-levels-in-binary-tree.cs
@@ -0,0 +1,72 @@
+public class TreeNode
+{
+ public int val;
+ public TreeNode? left;
+ public TreeNode? right;
+ public TreeNode(int val = 0, TreeNode? left = null, TreeNode? right = null)
+ {
+ this.val = val;
+ this.left = left;
+ this.right = right;
+ }
+}
+
+
+public class Solution
+{
+ private class Level
+ {
+ long sum;
+ int counter;
+
+ public Level()
+ {
+ sum = 0;
+ counter = 0;
+ }
+
+ public void Add(int x)
+ {
+ sum += x;
+ counter++;
+ }
+
+ public double Average
+ {
+ get => sum / (double)counter;
+ }
+ }
+
+ private List<Level> AverageOfLevels(List<Level> averages, TreeNode? node, int level)
+ {
+ if (node == null)
+ {
+ return averages;
+ }
+
+ if (level == averages.Count)
+ {
+ averages.Add(new Level());
+ }
+ averages[level].Add(node.val);
+
+ AverageOfLevels(averages, node.left, level + 1);
+ AverageOfLevels(averages, node.right, level + 1);
+
+ return averages;
+ }
+
+ public IList<double> AverageOfLevels(TreeNode? root)
+ => AverageOfLevels(new List<Level>(), root, 0).Select(level => level.Average).ToList();
+
+ public static void Main()
+ {
+ var s = new Solution();
+
+ foreach (var a in s.AverageOfLevels(new TreeNode(3, new TreeNode(9), new TreeNode(20, new TreeNode(15), new TreeNode(7)))))
+ {
+ Console.Write($"{a} ");
+ }
+ Console.WriteLine();
+ }
+}
|
2022-09-02 21:11:03 +02:00 |
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280a674871
|
problems(rs): add „417. Pacific Atlantic Water Flow“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-01 01:01:53 +02:00 |
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039c8b1a0b
|
problems(cpp): add „48. Rotate Image“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-09-01 01:01:22 +02:00 |
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71b16b3ab8
|
problems(rs): add „200. Number of Islands“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-29 19:22:05 +02:00 |
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5daf90ab2a
|
problems(cpp): add „1329. Sort the Matrix Diagonally“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-28 23:32:10 +02:00 |
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72367000cd
|
problems(cpp): add „363. Max Sum of Rectangle No Larger Than K“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-28 23:31:42 +02:00 |
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84eba00e33
|
problems(cpp): add „869. Reordered Power of 2“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-26 23:52:22 +02:00 |
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4aea0bb137
|
problems(cpp): add „383. Ransom Note“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-25 14:06:33 +02:00 |
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3bcb7469d9
|
problems(kt): add „326. Power of Three“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-24 12:35:09 +02:00 |
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13c5b4b30a
|
problems(cpp): add „234. Palindrome Linked List“
Signed-off-by: Matej Focko <me@mfocko.xyz>
|
2022-08-24 00:04:31 +02:00 |
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504fc1ba67
|
problems(rs): add „342. Power of Four“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-22 11:33:45 +02:00 |
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10007a1821
|
problems(rs): add „936. Stamping The Sequence“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-21 20:19:10 +02:00 |
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fef6742a2f
|
problems: add „871. Minimum Number of Refueling Stops“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-20 18:30:43 +02:00 |
|
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|
6eb2f09892
|
problems: add „659. Split Array into Consecutive Subsequences“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-19 22:33:11 +02:00 |
|
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1ccb92b8a7
|
problems: add „1338. Reduce Array Size to The Half“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-18 09:35:18 +02:00 |
|
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|
3b7f75f4e8
|
problems: add „804. Unique Morse Code Words“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-17 11:48:21 +02:00 |
|
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|
fa54cd1335
|
problems: add „387. First Unique Character in a String“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-16 11:10:52 +02:00 |
|
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|
dbb22b755d
|
problems: add „13. Roman to Integer“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-15 09:45:52 +02:00 |
|
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|
d533a1774f
|
problems: add „126. Word Ladder II“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-14 21:19:49 +02:00 |
|
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|
66888a4109
|
problems: add „30. Substring with Concatenation of All Words“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-13 22:50:35 +02:00 |
|
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|
9fa6578ce7
|
problems: add „235. Lowest Common Ancestor of a Binary Search Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-12 22:10:33 +02:00 |
|
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|
15e6d58b12
|
problems: add „98. Validate Binary Search Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-11 10:02:47 +02:00 |
|
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|
e11a347989
|
problems: add „108. Convert Sorted Array to Binary Search Tree“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-10 20:58:57 +02:00 |
|
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|
dd3b626157
|
problems: add „1286. Iterator for Combination“
Signed-off-by: Matej Focko <mfocko@redhat.com>
|
2022-08-09 15:14:12 +02:00 |
|
