For loops
Write a Java program using a for loop to print the numbers from 1 to 5.
for (int i = 1; i <= 5; i++)
Write a Java program using a while loop to print the numbers from 1 to 5.
int i = 1; while (i <= 5) { System.out.println(i); i++; }
Write a Java program that checks if a number is positive and prints "Positive" if it is. You can initialize a variable to any value.
int number = 5; if (number > 0) { System.out.println("Positive"); }
This operator in Java returns the remainder of a division operation.
What is modulo or %.
To generate a random integer between 1 and 8 using Math.random(), you multiply the result of Math.random() by this number, then add 1.
What is 8
Write a Java program using a for loop to print the numbers from 1 to 10
for (int i = 1; i <= 10; i++) { System.out.println(i); }
Write a Java program using a while loop to print the numbers from 1 to 10.
int i = 1; while (i <= 10) { System.out.println(i); i++; }
Write a Java program that checks if a number is positive or negative and prints "Positive" or "Negative".
if (number > 0) { System.out.println("Positive"); } else { System.out.println("Negative"); }
Given two integers a and b, write a Java statement to find the remainder when a is divided by b.
What is int remainder = a % b;
To generate a random integer between 0 and 35 using Math.random(), you multiply the result of Math.random() by this number, then add this number.
What is 36 and 0
Write a Java program using a for loop to print the first 10 even numbers.
for (int i = 1; i <= 10; i++) { System.out.println(2 * i); }
Write a Java program using a while loop to print the first 10 even numbers.
int i = 1; while (i <= 10) { System.out.println(2 * i); i++; }
Write a Java program that checks if a number is even or odd and prints "Even" or "Odd".
if (number % 2 == 0) { System.out.println("Even"); } else { System.out.println("Odd"); }
Write a Java statement to determine if a number n is even.
What is n%2 ==0
If you want a random integer between 10 and 100 using Math.random(), what do you multiply Math.random() by and what do you add to it?
What is multiply by 91 and add 10
Write a Java program using a for loop to print the first 10 multiples of 5.
for (int i = 1; i <= 10; i++) { System.out.println(5 * i); }
Write a Java program using a while loop to print the numbers from 10 down to 1.
int i = 10; while (i > 0) { System.out.println(i); i--; }
Write a Java program that checks if a number is positive, negative, or zero and prints "Positive", "Negative", or "Zero".
if (number > 0) { System.out.println("Positive"); } else if (number < 0) { System.out.println("Negative"); } else { System.out.println("Zero"); }
To check if an integer x is divisible by 5, you would check if this expression is true.
What is x % 5 == 0
What is the range of random integers generated by (Math.random() * 22) + 5?
What is 5 to 26?
Write a Java program using a for loop to print the squares of the numbers from 1 to 10.
for (int i = 1; i <= 10; i++) { System.out.println("Square of " + i + " = " + (i * i)); }
Write a Java program using a while loop to print the squares of the numbers from 1 to 10.
int i = 1; while (i <= 10) { System.out.println("Square of " + i + " = " + (i * i)); i++; }
Write a Java program that checks if a year is a leap year. A year is a leap year if it is divisible by 4 but not divisible by 100, except if it is also divisible by 400.
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) { System.out.println("Leap Year"); } else { System.out.println("Not a Leap Year"); }
In a loop, this condition can be used with the modulo operator to execute code every 3rd iteration and 5th iteration.
What is if (i % 3 == 0 && i %5 == 0)
To generate a random integer between -10 and 20 using Math.random(), you multiply Math.random() by this number, then add this number.
What is 31 and -10?