Package g0901_1000.s0965_univalued_binary_tree

Class Solution

java.lang.Object
g0901_1000.s0965_univalued_binary_tree.Solution
public class Solution extends java.lang.Object
965 - Univalued Binary Tree.

Easy

A binary tree is uni-valued if every node in the tree has the same value.

Given the root of a binary tree, return true if the given tree is uni-valued , or false otherwise.

Example 1:

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

Output: true

Example 2:

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

Output: false

Constraints:

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

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    isUnivalTree(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

    • isUnivalTree

      public boolean isUnivalTree(TreeNode root)