You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
20 lines
436 B
Ruby
20 lines
436 B
Ruby
# Definition for a binary tree node.
|
|
# class TreeNode
|
|
# attr_accessor :val, :left, :right
|
|
# def initialize(val)
|
|
# @val = val
|
|
# @left, @right = nil, nil
|
|
# end
|
|
# end
|
|
|
|
# @param {TreeNode} treeNode
|
|
# @return {Integer}
|
|
|
|
def minimum_depth_of_binary_tree(tree_node)
|
|
if tree_node.nil?
|
|
0
|
|
else
|
|
1 + [minimum_depth_of_binary_tree(tree_node.left), minimum_depth_of_binary_tree(tree_node.right)].min
|
|
end
|
|
end
|