Data Structures and Algorithms in Java
6th Edition
ISBN: 9781118771334
Author: Michael T. Goodrich
Publisher: WILEY
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Textbook Question
Chapter 1, Problem 17C
Write a short Java method that takes an array of int values and determines if there is a pair of distinct elements of the array whose product is even.
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Write a Java method that takes an array of type int and returns a boolean value. The
method returns true if the number of positive elements in the parameter array is
larger than the number of negative elements. The method returns false if any of the
following conditions is satisfied:
• The parameter array is of length of 0 or 1
• The number of positive elements of the parameter array is less than or equal
to the number of negative elements
• The number of positive elements or negative elements is equal to zero
The method's header is as follows.
public static boolean verify (int[] x)
Sample run
Result
int[] x =
(1, 2, 3};
verify(x);
{5};
verify(x);
int[] x = {1, 2, 3, -5, -1};
boolean b = verify(x);
int[] x = new int[0];
verify(x);
false
boolean b =
int[] x =
boolean b =
false
true
false
boolean b =
BIU A
Paragraph
+v
Write a Java method that takes an array of type int and returns a boolean value. The
method returns true if the number of positive elements in the parameter array is
larger than the number of negative elements. The method returns false if any of the
following conditions is satisfied:
• The parameter array is of length of O or 1
• The number of positive elements of the parameter array is less than or equal
to the number of negative elements
• The number of positive elements or negative elements is equal to zero
The method's header is as follows.
public static boolean verify (int[] x)
Sample run
int[] x =
boolean b =
Result
{1, 2, 3};
false
verify(x);
int[] x = (5};
boolean b =
false
verify(x);
int[] x = {1, 2, 3, -5, -1};
verify(x);
int[] x = new int[@];
verify(x);
true
boolean b% =
false
boolean b% =
+v
Paragraph
FOR JAVA
Write a method that takes an integer array and returns the difference between the sum of even indexed elements and the sum of odd indexed elements in that array.
Chapter 1 Solutions
Data Structures and Algorithms in Java
Ch. 1 - Prob. 1RCh. 1 - Suppose that we create an array A of GameEntry...Ch. 1 - Write a short Java method, isMultiple, that takes...Ch. 1 - Write a short Java method, isEven, that takes an...Ch. 1 - Write a short Java method that takes an integer n...Ch. 1 - Write a short Java method that takes an integer n...Ch. 1 - Write a short Java method that takes an integer n...Ch. 1 - Write a short Java method that counts the number...Ch. 1 - Prob. 9RCh. 1 - Prob. 10R
Ch. 1 - Modify the CreditCard class from Code Fragment 1.5...Ch. 1 - Prob. 12RCh. 1 - Modify the declaration of the first for loop in...Ch. 1 - Prob. 14CCh. 1 - Write a pseudocode description of a method for...Ch. 1 - Write a short program that takes as input three...Ch. 1 - Write a short Java method that takes an array of...Ch. 1 - Prob. 18CCh. 1 - Write a Java program that can take a positive...Ch. 1 - Write a Java method that takes an array of float...Ch. 1 - Write a Java method that takes an array containing...Ch. 1 - Prob. 22CCh. 1 - Write a short Java program that takes two arrays a...Ch. 1 - Modify the CreditCard class from Code Fragment 1.5...Ch. 1 - Modify the CreditCard class to add a toString()...Ch. 1 - Write a short Java program that takes all the...Ch. 1 - Write a Java program that can simulate a simple...Ch. 1 - A common punishment for school children is to...Ch. 1 - The birthday paradox says that the probability...Ch. 1 - (For those who know Java graphical user interface...
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