把这段代码改成python语言
时间: 2024-12-24 14:24:09 浏览: 8
这段C++代码可以转换成Python语言,以下是对应的Python版本:
```python
from collections import deque
class Node:
def __init__(self, value):
self.value = value
self.left = None
self.right = None
self.depth = 0
def update(node, root):
if not root or root.value <= node.value:
if not root.left:
root.left = node
node.depth = root.depth + 1
else:
update(node, root.left)
else:
if not root.right:
root.right = node
node.depth = root.depth + 1
else:
update(node, root.right)
def process_intervals(intervals):
intervals.sort(key=lambda x: x[0])
root = Node(intervals[0][0])
q = deque([root])
result = 0
for interval in intervals[1:]:
while q and q[-1].value < interval[0]:
current_node = q.pop()
if current_node.depth == len(intervals) - 1 or current_node.depth == len(intervals) - 2:
result += 1
update(Node(interval[0]), root)
q.append(root)
return result
# 示例
n = int(input())
intervals = []
for _ in range(n):
interval = list(map(int, input().split()))
intervals.append(interval)
print(process_intervals(intervals))
```
这里将区间树的概念转换成了Python中的类`Node`,使用了双端队列`deque`来模拟栈的行为,并对区间进行排序简化了操作。注意Python中的列表插入和删除效率更高,所以不需要像C++那样用`upda()`函数。`process_intervals`函数负责处理输入的区间并计算结果。
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