diff --git a/examples/stage0/solutions/Operators.java b/examples/stage0/solutions/Operators.java new file mode 100644 index 0000000..cdcdc0f --- /dev/null +++ b/examples/stage0/solutions/Operators.java @@ -0,0 +1,67 @@ +void main() { + // Create two integer variables, `first` and `second`. Assign `first` + // a value of 5, and `second` a value of 4. Then, print the sum of + // `first` and `second`. + int first = 5; + int second = 4; + System.out.println(first + second); + + // Create an integer variable `result`. Multiply the sum of 1 + 6 by the + // difference of 7 and 8, and store it in this variable. Then, print + // the value of `result`. + int result = (1 + 6) * (7 - 8); + System.out.println(result); + + // Given the below variable `rotPerSec`, create a variable `rotPerHour` + // whose value represents the corresponding amount of rotations per + // hour for `rotPerSec`. Then, print the value of `rotPerHour`. + int rotPerSec = 5; + int rotPerHour = rotPerSec * 60 * 60; + System.out.println(rotPerHour); + + // Create an integer variable `quotient1`, and assign to it the value + // of 5 divided by 3. Then print the value of `quotient1`. + double quotient1 = 5 / 3; + System.out.println(quotient1); + + // Create a variable `quotient2` of type double, and assign to it the + // value of 5.0 divided by 3. Then print the value of `quotient2`. + double quotient2 = 5.0 / 3; + System.out.println(quotient2); + + // Create a variable `normalizedAngle` that takes `rawEncoderDegrees` + // and calculates its "true" value (as a degree amount from 0 to 360). + // Then print the value of `normalizedAngle`. + int rawEncoderDegrees = 560; + int normalizedAngle = 560 % 360; + System.out.println(normalizedAngle); + + // Using only the increment operator, add 1 to the `timer` variable below. + // Then print the value of `timer`. + int timer = 1000; + timer++; + System.out.println(timer); + + // Using only the decrement operator, subtract 1 from the `secondsLeftInMatch` + // variable below. Then print the value of `secondsLeftInMatch`. + int secondsLeftInMatch = 85; + secondsLeftInMatch--; + System.out.println(secondsLeftInMatch); + + // TODO: Type casting if requested. + + // Print the sum, difference, product, and quotient of the two variables + // below. Especially take note of how the quotient is printed. + int num1 = 15; + int num2 = 2; + System.out.println(num1 + num2); + System.out.println(num1 - num2); + System.out.println(num1 * num2); + System.out.println(num1 / num2); + + // Create a variable `avg` of type double, and assign to it the average + // of the values 2, 5, and 4. Then print the value of `avg`. + // HINT: How can you ensure the result is not improperly rounded? + double avg = (2 + 5 + 4) / 3.0; + System.out.println(avg); +} \ No newline at end of file diff --git a/examples/stage0/solutions/Print.java b/examples/stage0/solutions/Print.java new file mode 100644 index 0000000..a6670c3 --- /dev/null +++ b/examples/stage0/solutions/Print.java @@ -0,0 +1,33 @@ +public class Print { + public static void main(String args[]) { + // Print "Hello World!", with a newline at the end. + System.out.println("Hello World!"); + + // Print the following lines, each with a separate `println()` statement: + // The robot knows where it is at all times. + // It knows this because it knows where it isn't. + System.out.println("The robot knows where it is at all times."); + System.out.println("It knows this because it knows where it isn't."); + + // Define a variable `pi` that is equal to 3.14159. + double pi = 3.14159; + // Define a variable `g` that is equal to 10. + int g = 10; + // Define a variable `mode` that is equal to "autonomous". + String mode = "autonomous"; + + // Now, print all three variables in the **same** print statement, + // separated by spaces. + System.out.println(pi + " " + g + " " + mode); + + // Now, change pi to equal 3.142857. Then, print the value of `pi` again. + pi = 3.142857; + System.out.println(pi); + + // Create a variable `degrees` of type `double` and assign it a value of + // 360. Then, print the variable to observe the type narrowing behavior + // (it stores as a double, although an integer was passed to it). + double degrees = 360; + System.out.println(degrees); + } +} \ No newline at end of file