Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 8.15PE
(Geometry: same line ?)
Write the following method to test whether all the points in the array points are on the same line:
public static boolean sameline(double[][] points)
Write a program that prompts the user to enter five points and displays whether they are on the same line. Here are sample runs:
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2. (Average an array) Write two overloaded methods that return the average of an array with the following headers:
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. DO NOT REJECT THE QUESTION. ----
Write a Java program that asks the user to enter an array of integers in the main The program will ask the user for the number of integer elements to be put in the array, and then ask the user for each element of the array. The program then calls a method named isSorted() that accepts an array of integers and returns true if the list is in sorted (increasing) order and false otherwise. For example, if arrays named arr1 and arr2 store [10, 20, 30, 41, 56] and [2, 5, 3, 12, 10] respectively, the calls sorted(arr1) and isSorted(arr2) should return true and false respectively. Assume the array has at least one integer element. A one-element array is considered to be sorted.
Write the following method to test whether all the points in the array points are on the same line:
public static boolean sameLine(double[][] points)
Write a program that prompts the user to enter five points and displays whetherthey are on the same line. Here are sample runs:
Enter five points: 3.4 2 6.5 9.5 2.3 2.3 5.5 5 −5 4 ↵EnterThe five points are not on the same lineEnter five points: 1 1 2 2 3 3 4 4 5 5 ↵EnterThe five points are on the same line
Chapter 8 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 8.2 - Declare an array reference variable for a...Ch. 8.2 - Prob. 8.2.2CPCh. 8.2 - What is the output of the following code? int[] []...Ch. 8.2 - Which of the following statements are valid? int...Ch. 8.3 - Show the output of the following code: int[][]...Ch. 8.3 - Show the output of the following code: int[][]...Ch. 8.4 - Show the output of the following code: public...Ch. 8.5 - Prob. 8.5.1CPCh. 8.6 - What happens if the input has only one point?Ch. 8.7 - What happens if the code in line 51 in Listing 8.4...
Ch. 8.8 - Declare an array variable for a three-dimensional...Ch. 8.8 - Assume char[][][] x =new char[12][5][2], how many...Ch. 8.8 - Show the output of the following code: int[][][]...Ch. 8 - (Sum elements column by column) Write a method...Ch. 8 - (Sum the major diagonal in a matrix) Write a...Ch. 8 - (Sort students on grades) Rewrite Listing 8.2,...Ch. 8 - (Compute the weekly hours for each employee)...Ch. 8 - (Algebra: add two matrices) Write a method to add...Ch. 8 - (Algebra: multiply two matrices) Write a method to...Ch. 8 - (Points nearest to each other) Listing 8.3 gives a...Ch. 8 - (All closest pairs of points) Revise Listing 8.3,...Ch. 8 - Prob. 8.9PECh. 8 - (Largest row and column) Write a program that...Ch. 8 - (Game: nine heads and tails) Nine coins are placed...Ch. 8 - (Financial application: compute tax) Rewrite...Ch. 8 - (Locate the largest element) Write the following...Ch. 8 - (Explore matrix) Write a program that prompts the...Ch. 8 - (Geometry: same line ?) Programming Exercise 6.39...Ch. 8 - (Sort two-dimensional array) Write a method to...Ch. 8 - (Financial tsunami) Banks lend money to each...Ch. 8 - (Shuffle rows) Write a method that shuffles the...Ch. 8 - (Pattern recognition: four consecutive equal...Ch. 8 - Prob. 8.20PECh. 8 - (Central city) Given a set of cities, the central...Ch. 8 - (Even number of 1s) Write a program that generates...Ch. 8 - (Game: find the flipped cell) Suppose you are...Ch. 8 - (Check Sudoku solution) Listing 8.4 checks whether...Ch. 8 - Prob. 8.25PECh. 8 - (Row sorting) Implement the following method to...Ch. 8 - (Column sorting) Implement the following method to...Ch. 8 - (Strictly identical arrays) The two-dimensional...Ch. 8 - (Identical arrays) The two-dimensional arrays m1...Ch. 8 - (Algebra: solve linear equations) Write a method...Ch. 8 - (Geometry: intersecting point) Write a method that...Ch. 8 - (Geometry: area of a triangle) Write a method that...Ch. 8 - (Geometry: polygon subareas) A convex four-vertex...Ch. 8 - (Geometry: rightmost lowest point) In...Ch. 8 - (Largest block) Given a square matrix with the...Ch. 8 - (Latin square) A Latin square is an n-by-n array...Ch. 8 - (Guess the capitals) Write a program that...
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