LockingTree (leetcode-in-java 1.11 API)

java.lang.Object
- g1901_2000.s1993_operations_on_tree.LockingTree

```
public class LockingTree
extends Object
```

Constructor Summary

Constructors
Constructor Description

LockingTree(int[] parent)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`lock(int num, int user)`
`boolean`	`unlock(int num, int user)`
`boolean`	`upgrade(int num, int user)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- LockingTree
```
public LockingTree(int[] parent)
```

Method Detail

lock

public boolean lock(int num,
                    int user)

unlock

public boolean unlock(int num,
                      int user)

upgrade

public boolean upgrade(int num,
                       int user)