本文整理汇总了Python中tree.Tree.preorder方法的典型用法代码示例。如果您正苦于以下问题：Python Tree.preorder方法的具体用法？Python Tree.preorder怎么用？Python Tree.preorder使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类tree.Tree的用法示例。
在下文中一共展示了Tree.preorder方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: TreeOrderTestCase
# 需要导入模块: from tree import Tree [as 别名]
# 或者: from tree.Tree import preorder [as 别名]
class TreeOrderTestCase(unittest.TestCase):
def setUp(self):
self.tree = Tree(1)
self.tree.left = Tree(2)
self.tree.right = Tree(3)
self.tree.right.left = Tree(4)
self.tree.right.right = Tree(5)
def test_preorder_tree(self):
self.assertEqual(list(self.tree.preorder()), [1, 2, 3, 4, 5])
def test_postorder_tree(self):
self.assertEqual(list(self.tree.postorder()), [2, 4, 5, 3, 1])
def test_inorder_tree(self):
self.assertEqual(list(self.tree.inorder()), [2, 1, 4, 3, 5])示例2: TreeTestCase
# 需要导入模块: from tree import Tree [as 别名]
# 或者: from tree.Tree import preorder [as 别名]
class TreeTestCase(unittest.TestCase):
def setUp(self):
self.tree = Tree()
def test001(self):
# creation
self.assertIsNotNone(self.tree)
self.assertIsNone(self.tree.root)
def test002(self):
# insert
self.tree.insert(42)
self.assertEqual(self.tree.root.data, 42)
self.tree.insert(25)
self.assertEqual(self.tree.root.left.data, 25)
self.tree.insert(777)
self.assertEqual(self.tree.root.right.data, 777)
def test003(self):
# length
for i in range(1, 10):
self.tree.insert(i)
self.assertEqual(i, len(self.tree))
def test004(self):
# iterators
self.tree.insert([4, 2, 1, 3, 6, 5, 8, 7, 9])
self.assertEqual([4, 2, 1, 3, 6, 5, 8, 7, 9], [n.data for n in self.tree.preorder()])
self.assertEqual([1, 3, 2, 5, 7, 9, 8, 6, 4], [n.data for n in self.tree.posorder()])
self.assertEqual([1, 2, 3, 4, 5, 6, 7, 8, 9], [n.data for n in self.tree.inorder()])
def test005(self):
# simple remove
self.tree.insert([42, 25, 777])
self.tree.remove(0)
self.assertEqual(len(self.tree), 3)
self.tree.remove(777)
self.assertEqual(len(self.tree), 2)
self.assertEqual([42, 25], [n.data for n in self.tree.preorder()])
self.tree.insert(12)
self.assertEqual(len(self.tree), 3)
self.tree.remove(25)
self.assertEqual(len(self.tree), 2)
self.assertEqual([42, 12], [n.data for n in self.tree.preorder()])
def test006(self):
# complex remove
self.tree.insert([42, 25, 777, 12, 36, 555, 999, 600])
self.tree.remove(42)
self.assertEqual(self.tree.root.data, 555)
self.tree.remove(555)
self.assertEqual(self.tree.root.data, 600)
def test007(self):
# stress
data = range(10, 100)
random.shuffle(data)
tree = Tree(data)
self.assertEqual(len(tree), len(data))
random.shuffle(data)
for d in data:
tree.remove(d)
self.assertEqual(len(tree), 0)示例3: TestTree
# 需要导入模块: from tree import Tree [as 别名]
# 或者: from tree.Tree import preorder [as 别名]
class TestTree(unittest.TestCase):
def setUp(self):
self.tree = Tree()
def testInsertSingleValue(self):
self.tree.insert(1)
def testInsertTwoValues(self):
self.tree.insert(1)
self.tree.insert(2)
self.assertEqual(self.tree.root.data, 1)
self.assertEqual(self.tree.root.right.data, 2)
def testInsertTreeValues(self):
self.tree.insert(1)
self.tree.insert(2)
self.tree.insert(3)
self.assertEqual(self.tree.root.data, 1)
self.assertEqual(self.tree.root.right.data, 2)
self.assertEqual(self.tree.root.right.right.data, 3)
def testMakeSearchTree(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
self.assertEqual(self.tree.root.data, 2)
self.assertEqual(self.tree.root.left.data, 1)
self.assertEqual(self.tree.root.right.data, 3)
def decrement(value):
return value - 1
def increment(value):
return value + 1
def testPreorderTraversalManipulations(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
self.tree.insert(4)
self.tree.preorder(TestTree.increment)
self.assertEqual(self.tree.root.data, 3)
self.assertEqual(self.tree.root.left.data, 2)
self.assertEqual(self.tree.root.right.data, 4)
self.assertEqual(self.tree.root.right.right.data, 5)
def testInOrderTraversalManupulations(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
self.tree.insert(4)
self.tree.inorder(TestTree.decrement)
self.assertEqual(self.tree.root.data, 1)
self.assertEqual(self.tree.root.left.data, 0)
self.assertEqual(self.tree.root.right.data, 2)
self.assertEqual(self.tree.root.right.right.data, 3)
def testPostOrderTraversalManipulations(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
self.tree.insert(4)
self.tree.postorder(TestTree.decrement)
self.tree.postorder(TestTree.decrement)
self.assertEqual(self.tree.root.data, 0)
self.assertEqual(self.tree.root.left.data, -1)
self.assertEqual(self.tree.root.right.data, 1)
self.assertEqual(self.tree.root.right.right.data, 2)
def testPreOrderTraversalPure(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
self.tree.insert(4)
self.tree.preorder(TestTree.decrement, False)
self.assertEqual(self.tree.root.data, 2)
self.assertEqual(self.tree.root.left.data, 1)
self.assertEqual(self.tree.root.right.data, 3)
self.assertEqual(self.tree.root.right.right.data, 4)
def testInOrderTraversalPure(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
self.tree.insert(4)
self.tree.inorder(TestTree.increment, False)
self.assertEqual(self.tree.root.data, 2)
self.assertEqual(self.tree.root.left.data, 1)
self.assertEqual(self.tree.root.right.data, 3)
self.assertEqual(self.tree.root.right.right.data, 4)
def testPostOrderTraversalPure(self):
self.tree.insert(2)
self.tree.insert(1)
self.tree.insert(3)
#.........这里部分代码省略.........