moonlightshadow123
4/10/2017 - 3:24 PM

111-Minimum-Depth-of-Binary-Tree https://leetcode.com/problems/minimum-depth-of-binary-tree/

111-Minimum-Depth-of-Binary-Tree https://leetcode.com/problems/minimum-depth-of-binary-tree/

recursive.py
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# Definition for a binary tree node.
# class TreeNode(object):
#     def __init__(self, x):
#         self.val = x
#         self.left = None
#         self.right = None

class Solution(object):
    def minDepth(self, root):
        """
        :type root: TreeNode
        :rtype: int
        """
        if root == None:
            return 0
        elif root.left == None:
            return self.minDepth(root.right)+1
        elif root.right == None:
            return self.minDepth(root.left)+1
        else:
            return min(self.minDepth(root.left)+1, self.minDepth(root.right)+1)
111-Minimum-Depth-of-Binary-Tree.md
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Given a binary tree, find its minimum depth.

The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node.