auto save

classes.py

 '''
 '''
-#猴子吃桃子
-def pench(n):
-    if n==10:
+#猴子吃桃
+def p(d):
+    #出口
+    if d==10:
         return 1
         return 1
-    num = (pench(n+1)+1)*2
-    return num
-peach_num = pench(7)
-print(peach_num)
-
+    n = (p(d+1)+1)*2
+    return n
+res = p(6)
+print(res)
 
 
-#请用递归实现1+2+3....+num的累加和
-#出口：1
-def sum_num(number):
-    if number == 1:
+#实现1+2+3+...+num的累加和
+#出口    1
+def s_n(n):
+    if n==1:
         return 1
         return 1
-    sum_temp = sum_num(number-1)
-    return number+sum_temp
-res = sum_num(3)
+    temp = s_n(n-1)
+    v = n+temp
+    return v
+res = s_n(3)
 print(res)
 print(res)
 
 
 
 
-#求阶乘  5！      5！= 5*4*3*2*1
-
 #兔子数量
 #兔子数量
 def f(n):
 def f(n):
     if n<=2:
     if n<=2:
         return 1
         return 1
     v = f(n-1)+f(n-2)
     v = f(n-1)+f(n-2)
     return v
     return v
-    # elif n>2:
-    #     v = f(n-1)+f(n-2)
-    #     return v
-res = f(6)
-print(res)
-
-
-#汉诺塔
-def hlt(n):
-    if n==1:
-        return 1
-    count = 2*hlt(n-1)+1
-    return count
-res = hlt(3)
-print(res)
+r = f(20)
+print(r)
 '''
 '''
 
 
-#求阶乘  5！      5！= 5*4*3*2*1
+#求阶乘   5！ = 5*4*3*2*1
 def f(x):
 def f(x):
     if x==0:
     if x==0:
         return 0
         return 0
     elif x==1:
     elif x==1:
         return 1
         return 1
     else:
     else:
-        y = x*f(x-1)
+        y = x * f(x-1)
         return y
         return y
-print(f(5))
-
-    
-
+r = f(5)
+print(r)