Package g0601_0700.s0662_maximum_width_of_binary_tree

Class Solution

java.lang.Object
g0601_0700.s0662_maximum_width_of_binary_tree.Solution
public class Solution extends java.lang.Object
662 - Maximum Width of Binary Tree.

Medium

Given the root of a binary tree, return the maximum width of the given tree.

The maximum width of a tree is the maximum width among all levels.

The width of one level is defined as the length between the end-nodes (the leftmost and rightmost non-null nodes), where the null nodes between the end-nodes are also counted into the length calculation.

It is guaranteed that the answer will in the range of 32-bit signed integer.

Example 1:

Input: root = [1,3,2,5,3,null,9]

Output: 4

Explanation: The maximum width existing in the third level with the length 4 (5,3,null,9).

Example 2:

Input: root = [1,3,null,5,3]

Output: 2

Explanation: The maximum width existing in the third level with the length 2 (5,3).

Example 3:

Input: root = [1,3,2,5]

Output: 2

Explanation: The maximum width existing in the second level with the length 2 (3,2).

Constraints:

  • The number of nodes in the tree is in the range [1, 3000].
  • -100 <= Node.val <= 100

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    widthOfBinaryTree(TreeNode root)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • widthOfBinaryTree

      public int widthOfBinaryTree(TreeNode root)