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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Question
Chapter 21.6, Problem 21.6.3CP
Program Plan Intro
Map:
Map is an interface which contains values on the basis of key and a value pair and represents a mapping between them. Each key and a value pair in the map are unique.
A map can be of three types: HashMaps, LinkedMaps and TreeMaps.
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Please can you tell me if this is true or false?
The map(callback [, thisArg]) method returns the index of the first element in the array that passes a test in thecallback function.
True
False
Practice / First Non-Repeating Vowel
Given a string, write a method to find the first non-repeating vowel (a, e, i, o, u) in it and return its index.
● If it doesn't exist, return -1.
● Assume that all the characters of the String is lowercase.
Do not use String class functions other than charAt() and length()
You can also try to solve with Map data structure like using a Map variable.
●
Example
input: google
output: 5
explanation: only e is
non-repeated vowel and it's
index is 5
Example
input: mood
output: -1
explanation: o is repeated, no
non-repeating vowel.
Example
input: responsible
output: 4
explanation: e is repeated, o
and i are not repeated, o is the
first non-repeating vowel
The for loop iterates across the elements in a given list. Hence, it runs forever, provided there are still objects to process. Will this prove to be a true or untrue statement?
Chapter 21 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 21.2 - Prob. 21.2.1CPCh. 21.2 - Prob. 21.2.2CPCh. 21.2 - Prob. 21.2.3CPCh. 21.2 - Prob. 21.2.4CPCh. 21.2 - Prob. 21.2.5CPCh. 21.2 - Suppose set1 is a set that contains the strings...Ch. 21.2 - Prob. 21.2.7CPCh. 21.2 - Prob. 21.2.8CPCh. 21.2 - What will the output be if lines 67 in Listing...Ch. 21.2 - Prob. 21.2.10CP
Ch. 21.3 - Prob. 21.3.1CPCh. 21.3 - Suppose you need to write a program that stores...Ch. 21.3 - Suppose you need to write a program that stores...Ch. 21.3 - Suppose you need to write a program that stores a...Ch. 21.3 - Prob. 21.3.5CPCh. 21.3 - Prob. 21.3.6CPCh. 21.4 - Prob. 21.4.1CPCh. 21.4 - Prob. 21.4.2CPCh. 21.5 - Prob. 21.5.1CPCh. 21.5 - Prob. 21.5.2CPCh. 21.5 - Prob. 21.5.3CPCh. 21.6 - Prob. 21.6.1CPCh. 21.6 - Prob. 21.6.2CPCh. 21.6 - Prob. 21.6.3CPCh. 21.6 - Prob. 21.6.4CPCh. 21.7 - Prob. 21.7.1CPCh. 21.7 - Prob. 21.7.2CPCh. 21 - Prob. 21.1PECh. 21 - (Display nonduplicate words in ascending order)...Ch. 21 - Prob. 21.3PECh. 21 - (Count consonants and vowels) Write a program that...Ch. 21 - Prob. 21.6PECh. 21 - (Revise Listing 21.9, CountOccurrenceOfWords.java)...Ch. 21 - Prob. 21.8PECh. 21 - Prob. 21.9PE
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Similar questions
- Modify the algorithm described in the class to calculate the longest palindrome, such that there is enough information on the table to build the longest palindrome from the table. Hint: You can use similar data structure used for Longest common subsequence. Explain how you can rebuild a longest palindrome from the given string using this data structure.arrow_forwardplease please please give me best correct answer Q1: Draw a compressed trie for set of strings { banana, banner, ban, banned, banger, bank)arrow_forwardString replacement is read from input. Then, sentence is read from input. If replacement is in sentence, then: Output 'Located at index: ' followed by the index of the last occurrence. Create a string from sentence with the first two occurrences of replacement replaced by '5' and output sentence on a newline.arrow_forward
- create a piece of code that demonstrates how to find a key K using a skip list S. The search is carried out using the algorithm using the functions next(p) and below(p).arrow_forwardYou can check whether a string is a substring of another string by using the find method in the str class. Write your own function to implementfind. Write a program that prompts the user to enter two strings and then checks whether the first string is a substring of the second string.arrow_forwardImplement the following function which accepts a string as parameter and reverses it, without using any function from the string library. void strReverse(char *str)arrow_forward
- write a program that uses a for loop. You’ll need to be able to explain it (not just send the code). In particular, explain how the loop works, and how the different forms of loop (for, for/list, for/vector, etc) are different from one another (this will require some experimentation to find out what each one does). Using racketarrow_forwardAllow student to insert one arbitrary string. Save the letters of the string into a list. Design and perform the following tasks and display your results: • Summarizing letters in a string. Write a function that receives a string and returns a list of tuples containing the unique letters and their frequencies in the string. Test your function and display each letter with its frequency. Your function should ignore case sensitivity (that is, 'a' and 'A' are the same) and ignore spaces and punctuation. When done, write a statement that says whether the string has all the letters of the alphabet. • Present descriptive statistics and graphs about the string data. • Sorting letters in different order and removing duplicates • Write a code that produces anagrams of a given string. An anagram of a string is another string formed by rearranging the letters in the first. program must accept inputs from a user, performs an operation using a userdefined function which will accept parameters and…arrow_forwardplease please type by coputer so i can copy and paste thanks. write a statment that define a map name myMap. the keys in myMap should be ints, and the values should be strings.arrow_forward
- 4. This question involves the process of taking a list of words, called wordList, and producing a formatted string of a specified length. The list wordList contains at least two words, consisting of letters only. When the formatted string is constructed, spaces are placed in the gaps between words so that as many spaces as possible are evenly distributed to each gap. The equal number of spaces inserted into each gap is referred to as the basic gap width. Any leftover spaces are inserted one at a time into the gaps from left to right until there are no more leftover spaces. The following three examples illustrate these concepts. In each example, the list of words is to be placed into a formatted string of length 20. Example 1: wordList: ["AP", "COMP", "SCI", "ROCKS"] Total number of letters in words: 14 Number of gaps between words: 3 Basic gap width: 2 Leftover spaces: 0 Formatted string: 2 0 1 A A|P| | 3 Basic gap width: 1 Leftover spaces: 2 Formatted string: 0 1 G R Example 2:…arrow_forwardjava Write a method that returns the frequency of each characters of a given String parameters If the given String is null ,then return null, if is empty then return an empty Map. Use Map data structurearrow_forwardWrite a Java application CountryList. In the main method, do the following:1. Create an array list of Strings called countries.2. Add "Canada", "India", "Mexico", "Peru" in that order.3. Use the enhanced for loop to print all countries in the array list, one per line.4. Add "Spain" at index 15. Replace the element at index 2 with "Vietnam". You must use the set method.6. Replace the next to the last element with "Brazil". You must use the set method. You willlose one point if you use 3 in the set method. Do this in a manner that would replace thenext to the last element, no matter the size of the array list.7. Remove the object "Canada" Do not remove at an index. Your code should work if"Canada" was at a different location. There is a version of remove method that willremove a specific object.8. Get and print the first element followed by "***"9. Call method toString() on countries to print all elements on one line.10. Use the enhanced for loop to print all countries in the array list,…arrow_forward
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