Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
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Textbook Question
Chapter 11, Problem 14E
Write a recursive method that will duplicate each character in a string and return the result as a new string. For example, if “book” the argument, the result would be “bbooookk”.
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Students have asked these similar questions
Given an input string, complete a helper method that extracts the vowels and returns the string of the vowels in the input string recursively.
All strings are lowercase.
Do not use any loops or regular expressions.
Test case 1:
extractVowel("i love you 3000")
"ioeou"
Test case 2:
extractVowel("aiueo")
"aiueo"
Given methods:
public static String extractVowel (String str) {
return extractVowelHelper (str, 0, "");
}
1
2
3
4
private static boolean isVowel (char c){
return c == 'a' || c == 'e' || c == 'i' || c == '0' || == 'u';
}
5.
6.
7.
In Java code do the following:Write a method that accepts a String as an argument. The method should use recursion to display each individual character in the String:
5. Palindrome Detector
A palindrome is any word, phrase, or sentence that reads the same forward and backward.
Here are some well-known palindromes:
Able was I, ere I saw Elba
A man, a plan, a canal, Panama
Desserts, I stressed
Kayak
Write a boolean method that uses recursion to determine whether a string argument is a
palindrome. The method should return true if the argument reads the same forward and
backward. Demonstrate the method in a program.
Chapter 11 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
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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- Given a long string use recursion to traverse the string and replace every vowel (A,E,I,O,U) with an @ sign. You cannot change the method header. public String encodeVowels(String s){ // Your code here }arrow_forwardWrite a recursive method that will reverse the order of the characters in agiven string and return the result as a new string. For example, if "book" isthe argument, the result would be "koob".arrow_forwardIf your first name starts with a letter from A-J inclusively: Write a recursive method that takes a string as argument and determines if the string has more vowels than consonants. Test the method by asking the user to enter a string. Hint: Write your recursive method to first count vowels and consonants.arrow_forward
- Repeating String Write a method that takes a String and an int and return a String that is the original String repeated n times. For example, repeatString("Famous", 3) should return "FamousFamousFamous" The method signature should be public String repeatString(String str, int n) public String repeatString(String str, int n) { //declare a string variable //set up statements for repeating n number of times //create the appropriate return statement }arrow_forwardUse for loop in Java language Write the method stringSplosion().* * The method takes one parameter, a non-empty String str (such as "Code") and* returns a String in the form "CCoCodCode". Notice that this includes the* first character of the original String, followed by the first two characters,* and so on until the whole String is used.* * Examples: stringSplosion("Code") returns "CCoCodCode" stringSplosion("abc")* returns "aababc" stringSplosion("x") returns "x"* * @param str the input String to process.* @return a new String as described above.arrow_forwardGiven a string, write a method that returns the number of occurrences of substrings "baba" or "mama" in the input string recursively. They may overlap. Do not use any loops within your code. Do not use any regular expressions and methods such as matches, split, replaceAll. "Maa mana, Test case 1: countBabaMama ("aba babaa amama ma") 2 Test case 2: countBabaMama ("bababamamama") 4arrow_forward
- 2. Write a method isPalidrome(String arg) that determines if a String is palindrome or not. Palindrome is when a String remains the same after reversing. The method should return boolean type. For example: MADAM is palindrome.arrow_forwardWrite a recursive method that converts a decimal numberinto a binary number as a string. The method header ispublic static String dec2Bin(int value)Write a test program that prompts the user to enter a decimal number and displaysits binary equivalent.arrow_forwardWrite a recursive method that converts a decimal number intoa hex number as a string. The method header ispublic static String dec2Hex(int value)Write a test program that prompts the user to enter a decimal number and displaysits hex equivalent.arrow_forward
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