Java Format: Unbound (saleable)
8th Edition
ISBN: 9780134448398
Author: SAVITCH, Walter
Publisher: Prentice Hall
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Textbook Question
Chapter 11, Problem 15E
Write a recursive method that will reverse the order of the characters in a given string and return the result as a new string. For example, if “book” is the argument, the result would be “koob”.
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Write a recursive Java method that takes a String as a parameter and returns true if the String is a palindrome. You may assume that the string only contains lower case characters (i.e. no numbers, spaces, punctuation, etc).
Write a recursive method thatfinds the number of occurrences of a specified letter in a string using the followingmethod header:
public static int count(String str, char a)
For example, count("Welcome", 'e') returns 2. Write a test program thatprompts the user to enter a string and a character, and displays the number ofoccurrences for the character in the string.
Write a recursive method called reverseString() that takes in a string as a parameter and returns the string in reversed order. The main method is provided to read a string from the user and call the reverseString() method.
Use Java.
Ex: If the input of the program is:
Hello
the reverseString() method returns and the program outputs:
Reverse of "Hello" is "olleH".
Ex: If the input of the program is:
Hello, world!
the reverseString() method returns and the program outputs:
Reverse of "Hello, world!" is "!dlrow ,olleH".
Hint: Move the first character to the end of the returning string and pass the remaining sub-string to the next reverseString() method call.
import java.util.Scanner;
public class LabProgram {
/* TODO: Write recursive reverseString() method here. */public static void main(String[] args) {Scanner scnr = new Scanner(System.in);String input, result;input = scnr.nextLine();result = reverseString(input); System.out.printf("Reverse of \"%s\" is \"%s\".", input, result);}}
Chapter 11 Solutions
Java Format: Unbound (saleable)
Ch. 11.1 - What output will be produced by the following...Ch. 11.1 - What is the output produced by the following code?Ch. 11.1 - Write a recursive definition for the following...Ch. 11.1 - What is the output of the following code? public...Ch. 11.1 - Prob. 5STQCh. 11.1 - Complete the definition of the following method....Ch. 11.2 - Revise the method getCount in Listing 11.5 so that...Ch. 11.2 - Prob. 8STQCh. 11.2 - Prob. 9STQCh. 11.2 - Suppose you want me class ArraySearcher to work...
Ch. 11.2 - What Java statement will sort the following array,...Ch. 11.2 - How would you change the class MergeSort so that...Ch. 11.2 - How would you change the class MergeSort so that...Ch. 11.2 - If a value in an array of base type int occurs...Ch. 11.3 - Convert the following event handler to use the...Ch. 11 - What output will be produced by the following...Ch. 11 - What output will be produced by the following...Ch. 11 - Write a recursive method that will compute the...Ch. 11 - Write a recursive method that will compute the sum...Ch. 11 - Complete a recursive definition of the following...Ch. 11 - Write a recursive method that will compute the sum...Ch. 11 - Write a recursive method that will find and return...Ch. 11 - Prob. 8ECh. 11 - Write a recursive method that will compute...Ch. 11 - Suppose we want to compute the amount of money in...Ch. 11 - Prob. 11ECh. 11 - Write a recursive method that will count the...Ch. 11 - Write a recursive method that will remove all the...Ch. 11 - Write a recursive method that will duplicate each...Ch. 11 - Write a recursive method that will reverse the...Ch. 11 - Write a static recursive method that returns the...Ch. 11 - Write a static recursive method that returns the...Ch. 11 - One of the most common examples of recursion is an...Ch. 11 - A common example of a recursive formula is one to...Ch. 11 - A palindrome is a string that reads the same...Ch. 11 - A geometric progression is defined as the product...Ch. 11 - The Fibonacci sequence occurs frequently in nature...Ch. 11 - Prob. 4PPCh. 11 - Once upon a time in a kingdom far away, the king...Ch. 11 - There are n people in a room, where n is an...Ch. 11 - Prob. 7PPCh. 11 - Prob. 10PPCh. 11 - Prob. 12PP
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