* [Python] [27] [demo experimental practice examples] [defined recursive functions]

Original title:

 

 

Answer the original question:

# ! / Usr / bin / Python 
# encoding = UTF. 8- 
# - * - Coding: UTF-. 8 - * - 

#   recursive function call, the inputted five characters, printed out in reverse order. 



# STR = INPUT () 

"" " 
DEF printStr (J): 
    IF STR: 
        S = printStr (J) 
        S = J [-1] 
        J = J [: -. 1] 
    the else: 
        S = None 
    return printStr (J) 
    
Print (printStr (STR)) 

"" " 

DEF Output (S, L):
     IF L == 0:
         return 
    Print (S [L-. 1 ]) 
    Output (S, L -1 ) 

S = INPUT ( "please input the str:\n")
l = len(s)

output(s,l)

 

Output:

 

 

 

-------- (I am dividing line) --------

reference:

1. RUNOOB.COM：https://www.runoob.com/python/python-exercise-example27.html

 

 

Remarks:

Initial modified: October 4, 2019 11:01:46

Environment: Windows 7 / Python 3.7.2