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Chapter: 13 / Q: 15
(Use BigInteger for the Rational class) Redesign and implement the Rational class in Listing 13.13 using BigInteger for the numerator and denominator
Chapter: 13 / Q: 16
(Create a rational-number calculator) Write a program similar to Listing 7.9, Calculator.java. Instead of using integers, use rationals, as shown in Figure 13.10a. You will need to use the split method in the String class,
Chapter: 13 / Q: 17
(Math: The Complex class) A complex number is a number in the form a + bi, where a and b are real numbers and i is 2-1. The numbers a and b are known as the real part and imaginary part of the complex number, respectively. You can perform addition, subtraction, multiplication, and division for compl
Chapter: 13 / Q: 18
(Use the Rational class) Write a program that computes the following summation series using the Rational class:
Chapter: 13 / Q: 19
(Convert decimals to fractions) Write a program that prompts the user to enter a decimal number and displays the number in a fraction. Hint: read the decimal number as a string, extract the integer part and fractional part from the string,
Chapter: 13 / Q: 20
(Algebra: solve quadratic equations) Rewrite Programming Exercise 3.1 to obtain imaginary roots if the determinant is less than 0 using the Complex class in Programming Exercise 13.17. Here are some sample runs
Chapter: 13 / Q: 21
(Algebra: vertex form equations) The equation of a parabola can be expressed in either standard form (y = ax2 + bx + c) or vertex form (y = a(x - h)2 + k). Write a program that prompts the user to enter a, b, and c as integers in standard form and displays h and k in the vertex form. Here are some s
Chapter: 14 / Q: 1
(Display images) Write a program that displays four images in a grid pane, as shown in Figure 14.43a
Chapter: 14 / Q: 2
(Tic-tac-toe board) Write a program that displays a tic-tac-toe board, as shown in Figure 14.43b. A cell may be X, O, or empty. What to display at each cell is randomly decided. The X and O are images in the files x.gif and o.gif
Chapter: 14 / Q: 3
(Display three cards) Write a program that displays three cards randomly selected from a deck of 52, as shown in Figure 14.43c. The card image files are named 1.png, 2.png, …, 52.png and stored in the image/card directory
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