Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
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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Chapter 30, Problem 30.8PE
Program Plan Intro

Eliminate duplicates

Program Plan:

  • Import necessary stream packages into program.
  • Define the class named “Main”.
    • Define main method.
      • Declare an array variable “val[]” in type of “int”.
      • Initialize the object “obj” for “Scanner” class.
      • Prompt the user and get the 10 values from user using “for” loop.
      • Call the method “eliminateDuplicates()” and print the resultant values on screen.
    • Define the “eliminateDuplicates ()” method which takes integer variable “list” as parameter.
      • Call the predefined method “distinct()” to find distinct values and return the sorted elements of array using “IntStream” class.

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(Random sentences and story writer) Write an app that uses random-number generation to create sentences. Use four arrays of strings, called article, noun, verb andprepostion. Create a sentence by selecting a word at random from each array in the following order: article, noun, verb, preposition, article, noun.As each word is picked, concatenate it to the previous words in the sentence. The words should be separated by spaces. When the sentence is output, it should start witha capital letter and end with a period. The program should generate 10 sentences and output them to a text box.    The arrays should be filled as follows:The article array should contain the articles "the", "a", "one", "some" and "any";The noun array should contain the nouns "boy", "girl", "dog", "town", "car";The verb array should contain the past tense verbs "drove", "jumped", "ran", "walked" and "skipped";The preposition array should contain the preposotions "to", "from", "over", "under" and "on";
(Sum elements row by row) write a method that returns the sum of all the elements in a specified row in a matrix using the following header: public static double sumRow(double [][] m, int rowIndex) Write a test program that reads a 3-by-4 matrix and displays the sum of each row here is a sample run.
(True/False): The ArraySum procedure (Section 5.2.5) receives a pointer to any array ofdoublewords.

Chapter 30 Solutions

Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)

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