Пример #1
0
class SymbolTable:
    def __init__(self):
        self.__binaryTree = Tree()

    def add(self, value):
        return self.__binaryTree.add(value)

    def __str__(self):
        return str(self.__binaryTree)
Пример #2
0
from BinaryTree import Tree
"""
BinaryTree.py has been defined 
"""

p = Tree()
q = Tree()
test1 = [1, None, 2]
test2 = [1, 2]
p.add(test1)
q.add(test2)

p_node = p.root
q_node = q.root


def isSameTree(p, q):
    if p is None and q is None:
        return True
    if p is None or q is None:
        return False
    if p.item == q.item:
        return isSameTree(p.left, q.left) and isSameTree(p.right, q.right)
    else:
        return False


if isSameTree(p_node, q_node):
    print('True')
else:
    print('False')
Пример #3
0
    sum -= u.item  # means we have reach node u
    if sum == 0 and u.left == None and u.right == None:  # if node u is leave_node and subSum is 0
        return True

    # reach node u, next to check U_child
    # regard u_child as new root
    elif u.left and zp_dfs(u.left, sum):
        return True
    elif u.right and zp_dfs(u.right, sum):
        return True
    else:
        return False


def hasPathSum(root, sum):
    if root == None:  # no path
        return False
    else:
        return zp_dfs(root, sum)


sum = 22
q = Tree()
test1 = [5, 4, 8, 11, None, 13, 4, 7, 2, None, None, None, 1]
q.add(test1)
print(q.preorder(q.root))
q_node = q.root
if hasPathSum(q_node, sum):
    print('True')
else:
    print('False')