Part A
Write a Java program that reads an integer n from the keyboard and loops until −13 ≤ n ≤ 13 is successfully entered. A do-while loop is advised.
Part B
Write a Java program that reads an integer n from the keyboard and prints the corresponding value n!. [This is n factorial]. You must verify that the input integer satisfies the constraint 0 ≤ n ≤ 13; keep looping until the constraint is satisfied.
Will give thumbs up to best answer.
a) import java.util.Scanner; public class KeepReadingUntilValid { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n; do { n = in.nextInt(); } while (n < -13 || n > 13); } } b) import java.util.Scanner; public class FactorialOfValid { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n; do { n = in.nextInt(); } while (n < 0 || n > 13); int f = 1; for(int i = 1; i <= n; ++i) { f *= i; } System.out.println(f); } }
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