文件: root - text - article - 2020 - 02 - binary-tree-level-with-minimum-sum.txt
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标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 387 次阅读, 23307 次搜索 | 111 个单词
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Hi, here's your problem today. This problem was recently asked by Twitter:
You are given the root of a binary tree. Find the level for the binary tree with the minimum sum, and return that value.
For instance, in the example below, the sums of the trees are 10, 2 + 8 = 10, and 4 + 1 + 2 = 7. So, the answer here should be 7.
标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 主页 | 类别: 计算机科学 | 387 次阅读, 23307 次搜索 | 111 个单词 You are given the root of a binary tree. Find the level for the binary tree with the minimum sum, and return that value.
For instance, in the example below, the sums of the trees are 10, 2 + 8 = 10, and 4 + 1 + 2 = 7. So, the answer here should be 7.
class Node:
def __init__(self, value, left=None, right=None):
self.val = value
self.left = left
self.right = right
def minimum_level_sum(root):
# Fill this in.
# 10
# / \
# 2 8
# / \ \
# 4 1 2
node = Node(10)
node.left = Node(2)
node.right = Node(8)
node.left.left = Node(4)
node.left.right = Node(1)
node.right.right = Node(2)
print minimum_level_sum(node)
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