Write a Java method random to return a positive integer from 1 to n. Note that Math.random(), returns a double x, such that 0.0 <= x < 1.0. The below code also uses, asserts. An assert is like the if expression, except that if condition fails, the program throws an exception. Here, it helps you check if the result is actually less than or equal to n. You can turn on asserts as follow: Go to Run -> Run Configurations. Go to Arguments tab and in VM arguments give \"-ea\" (without quotes). import java.util.Scanner; public class RandomNumbers { public static int random(int n){ //your code } public static void main(String[] args) { Scanner input = new Scanner(System.in); int num = input.nextInt(); int result = random(num); assert result <= num; System.out.println(result); } }
Solution
RandomNumbers.java
import java.util.Scanner;
public class RandomNumbers {
public static int random(int n){
//your code
return (int)(Math.random() * n) + 1;
}
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int num = input.nextInt();
int result = random(num);
assert result <= num;
System.out.println(result);
}
}
Output:
56
25
.
This PowerPoint helps students to consider the concept of infinity.
Write a Java method random to return a positive integer from 1 to n- N.docx
1. Write a Java method random to return a positive integer from 1 to n. Note
that Math.random(), returns a double x, such that 0.0 <= x < 1.0. The below
code also uses, asserts. An assert is like the if expression, except that if
condition fails, the program throws an exception. Here, it helps you check
if the result is actually less than or equal to n. You can turn on asserts
as follow: Go to Run -> Run Configurations. Go to Arguments tab and in VM
arguments give "-ea" (without quotes). import java.util.Scanner; public
class RandomNumbers { public static int random(int n){ //your
code } public static void main(String[] args) { Scanner input
= new Scanner(System.in); int num = input.nextInt(); int
result = random(num); assert result <= num;
System.out.println(result); } }
Solution
RandomNumbers.java
import java.util.Scanner;
public class RandomNumbers {
public static int random(int n){
//your code
return (int)(Math.random() * n) + 1;
}
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int num = input.nextInt();
int result = random(num);
assert result <= num;
System.out.println(result);
}
}
Output:
56
25
![Write a Java method random to return a positive integer from 1 to n. Note
that Math.random(), returns a double x, such that 0.0 <= x < 1.0. The below
code also uses, asserts. An assert is like the if expression, except that if
condition fails, the program throws an exception. Here, it helps you check
if the result is actually less than or equal to n. You can turn on asserts
as follow: Go to Run -> Run Configurations. Go to Arguments tab and in VM
arguments give "-ea" (without quotes). import java.util.Scanner; public
class RandomNumbers { public static int random(int n){ //your
code } public static void main(String[] args) { Scanner input
= new Scanner(System.in); int num = input.nextInt(); int
result = random(num); assert result <= num;
System.out.println(result); } }
Solution
RandomNumbers.java
import java.util.Scanner;
public class RandomNumbers {
public static int random(int n){
//your code
return (int)(Math.random() * n) + 1;
}
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int num = input.nextInt();
int result = random(num);
assert result <= num;
System.out.println(result);
}
}
Output:
56
25](https://image.slidesharecdn.com/writeajavamethodrandomtoreturnapositiveintegerfrom1ton-n-230205071109-696a9ffe/85/Write-a-Java-method-random-to-return-a-positive-integer-from-1-to-n-N-docx-1-320.jpg)
