diff --git a/binarytree2.py b/binarytree2.py
new file mode 100644
index 0000000000000000000000000000000000000000..34536971664eff8a563ad226788efd7764386bc5
--- /dev/null
+++ b/binarytree2.py
@@ -0,0 +1,195 @@
+import numpy as np
+import sys
+class MorseNode:
+ def __init__(self, c,morseCode=''):
+
+ self.char = c
+ self.morseCode=morseCode
+ self.dot = None
+ self.dash = None
+ #←
+ def insertLeft(self,c):
+
+ self.dot = MorseNode(c)
+ return self.dot
+ #→
+ def insertRight(self,c):
+
+ self.dash = MorseNode(c)
+ return self.dash
+
+root = MorseNode('*')
+#1st
+root.dash = MorseNode('T')
+root.dot = MorseNode('E')
+#2nd
+root.dot.dot = MorseNode('I')
+root.dot.dash = MorseNode('A')
+
+root.dash.dot = MorseNode('N')
+root.dash.dash = MorseNode('M')
+#3rd
+root.dot.dot.dot = MorseNode('S')
+root.dot.dot.dash = MorseNode('U')
+root.dot.dash.dot = MorseNode('R')
+root.dot.dash.dash = MorseNode('W')
+
+root.dash.dot.dot = MorseNode('D')
+root.dash.dot.dash = MorseNode('K')
+root.dash.dash.dot = MorseNode('G')
+root.dash.dash.dash = MorseNode('O')
+#4th
+root.dot.dot.dot.dot = MorseNode('H')
+root.dot.dot.dot.dash = MorseNode('V')
+root.dot.dot.dash.dot = MorseNode('F')
+root.dot.dot.dash.dash = MorseNode('')
+root.dot.dash.dot.dot = MorseNode('L')
+root.dot.dash.dot.dash = MorseNode('')
+root.dot.dash.dash.dot = MorseNode('P')
+root.dot.dash.dash.dash = MorseNode('J')
+
+root.dash.dot.dot.dot = MorseNode("B")
+root.dash.dot.dot.dash = MorseNode("X")
+root.dash.dot.dash.dot = MorseNode("C")
+root.dash.dot.dash.dash = MorseNode("Y")
+root.dash.dash.dot.dot = MorseNode("Z")
+root.dash.dash.dot.dash = MorseNode("Q")
+root.dash.dash.dash.dot = MorseNode("")
+root.dash.dash.dash.dash = MorseNode("")
+
+#5
+root.dot.dot.dot.dot.dot = MorseNode("5")
+root.dot.dot.dot.dot.dash = MorseNode("4")
+root.dot.dot.dot.dash.dot = MorseNode("")
+root.dot.dot.dot.dash.dash = MorseNode("3")
+root.dot.dot.dash.dot.dot = MorseNode("")
+root.dot.dot.dash.dot.dash = MorseNode("¿")
+root.dot.dot.dash.dash.dot = MorseNode("?")
+root.dot.dot.dash.dash.dash = MorseNode("2")
+
+root.dot.dash.dot.dot.dot = MorseNode("&")
+root.dot.dash.dot.dot.dash = MorseNode("")
+root.dot.dash.dot.dash.dot = MorseNode("+")
+root.dot.dash.dot.dash.dash = MorseNode("")
+root.dot.dash.dash.dot.dot = MorseNode("+")
+root.dot.dash.dash.dot.dash = MorseNode("")
+root.dot.dash.dash.dash.dot = MorseNode("")
+root.dot.dash.dash.dash.dash = MorseNode("1")
+
+root.dash.dot.dot.dot.dot = MorseNode("6")
+root.dash.dot.dot.dot.dash = MorseNode("=")
+root.dash.dot.dot.dash.dot = MorseNode("/")
+root.dash.dot.dot.dash.dash = MorseNode("")
+root.dash.dot.dash.dot.dot = MorseNode("")
+root.dash.dot.dash.dot.dash = MorseNode("")
+root.dash.dot.dash.dash.dot = MorseNode("(")
+root.dash.dot.dash.dash.dash= MorseNode("")
+
+root.dash.dash.dot.dot.dot = MorseNode("7")
+root.dash.dash.dot.dot.dash = MorseNode("")
+root.dash.dash.dot.dash.dot = MorseNode("")
+root.dash.dash.dot.dash.dash = MorseNode("")
+root.dash.dash.dash.dot.dot = MorseNode("8")
+root.dash.dash.dash.dot.dash = MorseNode("")
+root.dash.dash.dash.dash.dot = MorseNode("9")
+root.dash.dash.dash.dash.dash = MorseNode("0")
+#6
+root.dot.dash.dot.dash.dot.dash = MorseNode(".")
+root.dash.dash.dot.dot.dash.dash = MorseNode(",")
+root.dash.dot.dash.dash.dot.dash = MorseNode(")")
+root.dash.dot.dot.dot.dot.dash = MorseNode("-")
+root.dash.dash.dot.dot.dot.dash = MorseNode("i")
+root.dot.dot.dash.dash.dot.dash = MorseNode("_")
+root.dot.dash.dash.dash.dash.dot = MorseNode("'")
+root.dash.dash.dash.dot.dot.dot = MorseNode(":")
+root.dot.dash.dot.dot.dash.dot = MorseNode("”")
+root.dash.dot.dash.dot.dash.dash = MorseNode("!")
+root.dash.dot.dash.dot.dash.dot = MorseNode(";")
+root.dot.dot.dot.dash.dot.dot = MorseNode("\n")
+#7
+root.dot.dot.dot.dash.dot.dot.dash = MorseNode("$")
+
+class BinaryTree:
+ def __init__(self):
+ # 初始化结点，因为左右结点都可能为空，所以默认设置左右结点的值为空，如果没有传入左右结点就是空，有的话则是传入的结点
+ self.root = root
+
+ def encode(self,letter):
+ node= self.findMorseCode(self.root,'',letter)
+ return node.morseCode
+
+ def findMorseCode(self,node,morsecode,letter):
+ if node==None:
+ return None
+ node.morseCode=morsecode
+ if node.char==letter:
+ return node
+ next=self.findMorseCode(node.dot,morsecode+'.',letter)
+ if next!=None:
+ return next
+ else:
+ return self.findMorseCode(node.dash,morsecode+'-',letter)
+
+ def decode(self,morseCode):
+ letter = self.root
+ for c in morseCode:
+ if c == ' ':
+ return letter.char
+ if c == '.':
+ letter = letter.dot
+ elif c == '-':
+ letter = letter.dash
+ return letter.char
+
+Tree=BinaryTree()
+
+
+def encrypt(message):
+ cipher = ''
+ for letter in message:
+ if letter != ' ':
+ # 查字典并添加对应的摩斯密码 # 用空格分隔不同字符的摩斯密码
+ cipher += Tree.encode(letter) + ' '
+ else:
+ # 1个空格表示不同的字符 # 2表示不同的词
+ cipher += ' '
+ return cipher
+
+# 将字符串从摩斯解密为英文的函数
+def decrypt(message):
+ # 在末尾添加额外空间以访问最后一个摩斯密码
+ message += ' '
+ decipher = ''
+ citext = ''
+ i = 0
+ for letter in message:
+ # 检查空间
+ if letter != ' ':
+ # 计数器来跟踪空间
+ i = 0
+ # 在空格的情况下
+ citext += letter
+ # 在空间的情况下
+ else:
+ # 如果 i = 1 表示一个新字符
+ i += 1
+ # 如果 i = 2 表示一个新词
+ if i == 2:
+ # 添加空格来分隔单词
+ decipher += ' '
+ else:
+ # 使用它们的值访问密钥（加密的反向）
+ decipher += Tree.decode(citext)
+ citext = ''
+ return decipher
+
+result=encrypt('US')
+print(result)
+result=decrypt(result)
+print(result)
+x=sys.stdin.readline(100)
+print(x)
+result=encrypt(x)
+print(result)
+result=decrypt(result)
+print(result)