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- import java.util.Scanner;
- public class InvalidNumber_10 {
- public static void main(String[] args) {
- Scanner scanner = new Scanner(System.in);
- int number = Integer.parseInt(scanner.nextLine());
- //валидно: [100…200] или е 0 ->
- // (number >= 100 && number <= 200) или number == 0-> нищо
- //невалидно -> invalid
- boolean isValidNumber = (number >= 100 && number <= 200) || number == 0;
- //isValidNumber = true -> ако числото е валидно
- //isValidNumber = false -> ако числото не е валидно
- //ако е невалидно -> isValidNumber = false
- //!true -> false
- //!false -> true
- //if (isValidNumber == false) -> OK
- if (!isValidNumber) {
- //невалидно
- System.out.println("invalid");
- }
- }
- }
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