2. Using the Hashtable class, write a spelling checker program that reads through a text file and checks for spelling errors. You will, of course, have to limit your dictionary to several common words. 3. Create a new Hash class that uses an arraylist instead of an array for the hash table. Test your implementation by rewriting (yet again) the computer terms glossary application.
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2. Using the Hashtable class, write a spelling checker program that reads
through a text file and checks for spelling errors. You will, of course, have
to limit your dictionary to several common words.
3. Create a new Hash class that uses an arraylist instead of an array for the
hash table. Test your implementation by rewriting (yet again) the computer
terms glossary application.
Step by step
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- Design and implement an insertSorted() method for the MyArrayList class. The method should receive a single object and insert it in its correct position. You can assume that the calling array is already in a sorted order. The calling array is therefore updated. Follow the three step method for designing the method. Develop the java code for the method. Create a test program to test the method thoroughly using the Integer wrapper class.Create a new Hash class that uses an arraylist instead of an array for the hash table. Test your implementation by rewriting (yet again) the computer terms glossary application.Import the ArrayList and List classes from the java.util package to create a list of phone numbers and also import the HashSet and Set classes from the java.util package to create a set of unique prefixes. Create a class called PhoneNumberPrefix with a main method that will contain the code to find the unique prefixes. Create a List called phoneNumbers and use the add method to add several phone numbers to the list. List<String> phoneNumbers = new ArrayList<>(); phoneNumbers.add("555-555-1234"); phoneNumbers.add("555-555-2345"); phoneNumbers.add("555-555-3456"); phoneNumbers.add("444-444-1234"); phoneNumbers.add("333-333-1234"); Create a Set called prefixes and use a for-each loop to iterate over the phoneNumbers list. For each phone number, we use the substring method to extract the first 7 characters, which represent the prefix, and add it to the prefixes set using the add method. Finally, use the println method to print the prefixes set, which will contain all of…
- Write 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,…JAVA Create a new class HashSetManipulation with a main method. Create a new HashSet set and populate it with initial values "A", "B", and "C" using the add method. Print the size of the set using set.size(). Use a for loop to print the values in the set. Use the add method to add a new value "D" to the set and print the result of the set to show that the value has been added. Use the remove method to remove value "A" from the set and print the result of the set to show that the value has been removed. Use the contains method to check if the value "C" exists in the set and print the result.Complete ArrayStack.java, an array-based implementation o the Stack.java interface. Modify only the bodies of the following methods in the ArrayStack class: push pop top isEmpty isFull Nothing else should be modified in ArrayStack. Write the class ArrayStackTest to test your implementation. Print only the names of the tests and error messages. Give the test method meaningful names (e.g., emptyStackTest). Test push, pop, top, and isEmpty immediately after the stack has been instantiated. Push an element on an empty stack. Test pop, top, and isEmpty. Instantiate a stack with initialCapacity of 1. Push two elements. Check capacity. Other tests you deem necessary.
- Implement a resize function for a hash table. Resizing is the process of increasing a hash table's size when too many items have been added, reducing the hash table's effectiveness. To resize the hash table, increase the size of the table by some small factor (not less than 2x), remove everything from the old table, and insert it into the new larger table. Make sure to free up memory that is no longer used after resizing. Use the following heuristics to resize the table: • When the load factor exceeds .5. If no entry is found within the probe distance. Note, you may need to change insert as well to have a fully working solution.Develop a class ResizingArrayQueueOfStrings that implements the queueabstraction with a fixed-size array, and then extend your implementation to use arrayresizing to remove the size restriction.Develop a class ResizingArrayQueueOfStrings that implements the queueabstraction with a fixed-size array, and then extend your implementation to use arrayresizing to remove the size restriction.Using JAVA, write a method that modifies an ArrayList<String>, moving all strings starting with an uppercase letter to the front, without otherwise changing the order of the elements. Write a test program to demonstrate the correct operation of the method.
- Java Program: There are errors in the lexer and shank file. Please fix those errors and there must be no error in any of the code at all. Below is the lexer, shank, and token files. The shank file is the main method. There is a rubric attached as well. Lexer.java import java.util.ArrayList;import java.util.HashMap;import java.util.List; import mypack.Token.TokenType; public class Lexer { private static final int INTEGER_STATE = 1;private static final int DECIMAL_STATE = 2;private static final int IDENTIFIER_STATE = 3;private static final int SYMBOL_STATE = 4;private static final int ERROR_STATE = 5;private static final int STRING_STATE = 6;private static final int CHAR_STATE = 7;private static final int COMMENT_STATE = 8; private static final char EOF = (char) -1; private static String input;private static int index;private static char currentChar;private static int lineNumber = 1;private static int indentLevel = 0;private static int lastIndentLevel = 0; private static…JAVA Create a new class HashMapManipulation with a main method. Import the necessary classes from the java.util package, including the HashMap class. Create a HashMap object, named mapand use the put() method to add key-value pairs to the map. The keys are strings "A", "B", and "C", and the values are integers 1, 2, and 3 respectively. Use the size() method to print the size of the map. Use a for loop to print the key-value pairs in the map. The loop should iterate over the entries in the map using the entrySet() method, which will return a set of Map.Entry objects representing the key-value pairs in the map. The key and value of each entry are printed using the getKey() and getValue() methods, respectively. Use theget() method to get the value of key "A", and assigns it to a variable value. The value is then printed. Use the put() method to add a new key-value pair to the map. The key is "D" and the value is 4. The map is then printed again, to show the added key-value…Please you need Implement quicksort in a JAVA programming language. The first version will use the first element of the array as the pivot. Please help me with a Java code , It needs to take the input from a file of 100 data elements. Can someone please help me with this coding problem. I have the data set file , but I cannot upload it in here. Kindly help me with the code. ????