Python程序将数字移动到字符串的末尾

给定一个字符串，任务是编写一个Python程序将其中的所有数字移动到它的末尾。

例子：

Input : test_str = ‘geek2eeks4g1eek5sbest6forall9’ 
Output : geekeeksgeeksbestforall241569 
Explanation : All numbers are moved to end.

Input : test_str = ‘geekeeksg1eek5sbest6forall9’ 
Output : geekeeksgeeksbestforall1569 
Explanation : All numbers are moved to end. 
 

方法 1：使用isdigit()和循环

在此，我们使用 isdigit() 检查元素和数字，跟踪所有数字并在迭代后的字符串末尾追加。

Python3

# initializing string
test_str = 'geek2eeks4g1eek5sbest6forall9'
  
# printing original string
print("The original string is : " + str(test_str))
  
# getting all numbers and removing digits
res = ''
dig = ''
for ele in test_str:
    if ele.isdigit():
        dig += ele
    else:
        res += ele
  
# adding digits at end
res += dig
  
# printing result
print("Strings after digits at end : " + str(res))

输出：

The original string is : geek2eeks4g1eek5sbest6forall9

Strings after digits at end : geekeeksgeeksbestforall241569

方法 2：使用join()  

在这种情况下，我们执行提取数字并使用单独的推导忽略它们然后加入两者的任务。最后，数字字符串连接到实际字符串的末尾。

蟒蛇3

# initializing string
test_str = 'geek2eeks4g1eek5sbest6forall9'
  
# printing original string
print("The original string is : " + str(test_str))
  
# getting all numbers
dig = ''.join(ele for ele in test_str if ele.isdigit())
  
# getting all elements not digit
res = ''.join(ele for ele in test_str if not ele.isdigit())
  
# adding digits at end
res += dig
  
# printing result
print("Strings after digits at end : " + str(res))

输出：

The original string is : geek2eeks4g1eek5sbest6forall9

Strings after digits at end : geekeeksgeeksbestforall241569