you work in the quality control department at the electronics factory. Each device is assigned a unique serial number consisting of Latin letters and numbers. The hypothesis was recently put forward that serial numbers in which many repeating characters can be less reliable or more often faked.
rnyour task & mdash; Write a program for primary analysis. The program should determine how much & nbsp; of various & nbsp; symbols (letters or numbers) in the serial number are found more than once. This will help to automatically mark potentially “suspicious” numbers for further verification.
rntechnical requirements:
rn serial number of the product (line, & nbsp;
the number of different characters that are found in the line more than once (an integer, & nbsp;
abca11
2
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# Получаем входную строку от пользователя
input_string = input()
# Приводим всю строку к нижнему регистру, чтобы 'a' и 'A' считались одним и тем же символом
input_string = input_string.lower()
# Счетчик для символов, которые встречаются более одного раза
duplicate_count = 0
# Строка для хранения уже проверенных уникальных символов, чтобы не считать один и тот же символ дважды (например, в строке 'aaa' символ 'a' повторяется, но это всего 1 тип символа)
processed_characters = ""
# Начинаем цикл: перебираем каждый символ в полученной строке
for char in input_string:
# Проверяем, обрабатывали ли мы уже этот тип символа ранее
if char in processed_characters:
# Если да, то мы его уже учли, поэтому переходим к следующему символу в строке
continue
# Если это новый для нас символ, считаем, сколько раз он встречается во всей строке
if input_string.count(char) > 1:
# Если символ встречается больше одного раза, увеличиваем наш счетчик дубликатов
duplicate_count += 1
# Добавляем текущий символ в строку уже обработанных, чтобы не проверять его снова
processed_characters += char
# Выводим итоговый результат
print(duplicate_count)1 - Read the task and understand what needs to be done
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Running your code...