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Python Program to move numbers to the end of the string
• Last Updated : 11 Dec, 2020

Given a string, the task is to write a Python program to move all the numbers in it to its end.

Examples:

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.

Method 1 : Using isdigit() and loop

In this, we check elements and digits using isdigit(), keeping track of all the numbers and append at end of string post iteration.

## 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))`

Output:

The original string is : geek2eeks4g1eek5sbest6forall9

Strings after digits at end : geekeeksgeeksbestforall241569

Method 2 : Using join()

In this, we perform the task of extracting digits and ignoring them using separate comprehensions and then joining both. At the end, digit string is joined at end of actual string.

## Python3

 `# 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))`

Output:

The original string is : geek2eeks4g1eek5sbest6forall9

Strings after digits at end : geekeeksgeeksbestforall241569

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