private final val aaa: AtomicBoolean = new AtomicBoolean(false) final def setaaa(completed: Boolean): Unit = { aaa.set(completed) }
时间: 2024-06-03 13:06:47 浏览: 77
This code declares a private final variable named "aaa" of type AtomicBoolean and initializes it with a value of false. It also defines a final method named "setaaa" that takes a boolean parameter "completed" and sets the value of "aaa" to the value of "completed". The AtomicBoolean class is used to provide atomic operations on a boolean variable, ensuring thread safety.
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private final val aaa: AtomicBoolean = new AtomicBoolean(false)
This line of code declares a private final variable named "aaa" of type AtomicBoolean and initializes it to false. AtomicBoolean is a concurrency utility class that provides atomic operations on a boolean value. This means that multiple threads can safely read and modify the value of "aaa" without causing race conditions or other synchronization issues. The use of "private final" ensures that the variable can only be accessed within the current class and that its value cannot be changed once it has been initialized.
对下面代码每一步含义进行注释 def insert(self, val): if not self.root: self.root = TreeNode(val) return cur = self.root while cur: if val < cur.val: if not cur.left: cur.left = TreeNode(val) return else: cur = cur.left else: if not cur.right: cur.right = TreeNode(val) return else: cur = cur.right
这段代码是二叉搜索树的插入操作代码,具体注释如下:
```
def insert(self, val): # 定义插入操作函数,val为要插入的节点值
if not self.root: # 如果二叉搜索树为空,则将要插入的节点作为根节点
self.root = TreeNode(val) # 创建根节点
return # 返回
cur = self.root # 如果二叉搜索树不为空,则从根节点开始查找
while cur: # 进入循环,直到找到合适的插入位置或者查找到叶子节点
if val < cur.val: # 如果要插入的值小于当前节点值
if not cur.left: # 如果当前节点的左子节点为空,则将要插入的节点作为当前节点的左子节点
cur.left = TreeNode(val) # 创建左子节点
return # 返回
else: # 如果当前节点的左子节点不为空,则继续向左查找
cur = cur.left # 将当前节点设置为左子节点,继续查找
else: # 如果要插入的值大于等于当前节点值
if not cur.right: # 如果当前节点的右子节点为空,则将要插入的节点作为当前节点的右子节点
cur.right = TreeNode(val) # 创建右子节点
return # 返回
else: # 如果当前节点的右子节点不为空,则继续向右查找
cur = cur.right # 将当前节点设置为右子节点,继续查找
```
总体来说,这段代码的作用是将一个节点插入到二叉搜索树中,并保证插入后仍然是二叉搜索树。