📅  最后修改于: 2023-12-03 15:39:55.028000             🧑  作者: Mango
UGC NET CS 2016年7月 - III 问题26是计算机科学领域的一个问题。问题26主要涉及到计算机科学中的几个主题,这些主题包括:
在解决问题26时,我们需要使用编程语言来编写代码实现平衡树和AVL树。以下是一个简单的Python代码片段,用于实现AVL树的插入操作:
class Node:
def __init__(self, key):
self.left = None
self.right = None
self.key = key
self.height = 1
class AVLTree:
def insert(self, root, key):
if not root:
return Node(key)
elif key < root.key:
root.left = self.insert(root.left, key)
else:
root.right = self.insert(root.right, key)
root.height = 1 + max(self.getHeight(root.left), self.getHeight(root.right))
balance = self.getBalance(root)
if balance > 1 and key < root.left.key:
return self.rightRotate(root)
if balance < -1 and key > root.right.key:
return self.leftRotate(root)
if balance > 1 and key > root.left.key:
root.left = self.leftRotate(root.left)
return self.rightRotate(root)
if balance < -1 and key < root.right.key:
root.right = self.rightRotate(root.right)
return self.leftRotate(root)
return root
def leftRotate(self, z):
y = z.right
T2 = y.left
y.left = z
z.right = T2
z.height = 1 + max(self.getHeight(z.left),
self.getHeight(z.right))
y.height = 1 + max(self.getHeight(y.left),
self.getHeight(y.right))
return y
def rightRotate(self, z):
y = z.left
T3 = y.right
y.right = z
z.left = T3
z.height = 1 + max(self.getHeight(z.left),
self.getHeight(z.right))
y.height = 1 + max(self.getHeight(y.left),
self.getHeight(y.right))
return y
def getHeight(self, root):
if not root:
return 0
return root.height
def getBalance(self, root):
if not root:
return 0
return self.getHeight(root.left) - self.getHeight(root.right)
myTree = AVLTree()
root = None
root = myTree.insert(root, 10)
root = myTree.insert(root, 20)
root = myTree.insert(root, 30)
root = myTree.insert(root, 40)
root = myTree.insert(root, 50)
root = myTree.insert(root, 25)
print("Preorder遍历树")
myTree.preOrder(root)
print()
该代码片段实现了AVL树的插入操作,并使用Preorder遍历算法来打印树中的节点。
在处理问题26时,编写类似这样的代码片段非常有用。这样的代码片段可以帮助我们更好地理解算法和数据结构,并实现自己的解决方案。