麻烦各位大神帮帮忙我是职场小白

# 1.倒序遍历字符串”helloworld”。
# 2.请将s = 'aAsmr3idd4bgs7Dlsf9eAF',字符串的数字取出,并输出成一个新的字符串     结果:3479
# 3.定义字符串line='I am a beautiful girl',变化为:girl beautiful a am I
#1:  str="helloworld"
      l=list(str)
      l.reverse()
      print(' '.join(l))

#2:    s='aAsmr3idd4bgs7Dlsf9eAF'
      l=list(filter(str.isdigit,s))
      print(' '.join(l))

#3: def reverse_sentence(sentence):
         words=sentence.split()
         words.reverse()
         new_str=" ".join(words)
         return new_str
     line='I am a beautiful girl'
     print(reverse_sentence(line))

java版的要吗? 思路一样的 phy