Скачать или смотреть Custom Sorted String – Detailed Version

In this problem, you are given a string consisting only of alphanumeric characters. Your task is to sort the string in a custom order based on the following rules:

All lowercase letters should come first (in sorted ascending order).

All uppercase letters should come next (in sorted ascending order).

All odd digits should follow (in sorted ascending order).

All even digits should come last (in sorted ascending order).

To achieve this, we use Python's built-in sorted() function with a custom key provided by a lambda function. The lambda function returns a tuple for each character that determines its priority in the sort:

Lowercase letters are assigned the tuple (0, v character v).

Uppercase letters are assigned (1, v character v).

Odd digits are assigned (2, v integer value of digit v).

Even digits are assigned (3, v integer value of digit v).

By sorting based on these tuples, we obtain the desired order. Finally, we join the sorted characters to form the resulting string.

Below is the detailed code with inline comments explaining each step.

Code (Detailed Version):

def solve():
Read the input string and remove extra whitespace
s = input().strip()

Use sorted() with a custom lambda function as the key
The lambda function assigns a tuple to each character determining its sort order:
(0, c) - for lowercase letters (highest priority)
(1, c) - for uppercase letters (next priority)
(2, int(c)) - for odd digits (third group)
(3, int(c)) - for even digits (fourth group)
sorted_chars = sorted(s, key=lambda c:
(0, c) if c.islower() else
(1, c) if c.isupper() else
(2, int(c)) if int(c) % 2 == 1 else
(3, int(c)))

Join the sorted characters into a single string
result = ''.join(sorted_chars)

Print the final sorted string
print(result)

if _name_ == '__main__':
solve()