对同一字符串中包含数字和字符的值进行排序A1，B1

def sort_string(string):
    digits = []
    characters = []

    for char in string:
        if char.isdigit():
            digits.append(char)
        else:
            characters.append(char)

    digits.sort()
    characters.sort()

    sorted_string = ""
    i = 0
    j = 0

    while i < len(digits) and j < len(characters):
        if digits[i] < characters[j]:
            sorted_string += digits[i]
            i += 1
        else:
            sorted_string += characters[j]
            j += 1

    while i < len(digits):
        sorted_string += digits[i]
        i += 1

    while j < len(characters):
        sorted_string += characters[j]
        j += 1

    return sorted_string

# 示例调用
string = "A1B1"
sorted_string = sort_string(string)
print(sorted_string)