Unlike when you create a String, when you create a StringBuilder, you must use the keyword new buffer class null

StringBuilder objects should be used in place of String objects if O is more than 80 characters long. the string may grow. O the string is declared final. O the tring needs to be initialized.

1) Write a method in java that performs the union operation on two integer arrays, i.e. it will createa new array that has the values from the two input arrays but with no duplicates.• The method must have the following signature:public static int[] union(int[] a1, int[] a2)• You can assume that no input array element will have a value less than 1.• Your method can return an array that is the same size as the two input arrays puttogether. This will mean, in general, the returned array will have too many elements.This is fine. Any elements you don’t need, you simply set to zero.• Implement this method using Java primitives only. You may use the array lengthproperty.• If you want to implement other methods to help you, you may do so. You must writethe method specified above, but you may write other methods to help you if you wantto. You must show the full implementation of any methods you create, however.

C++ Add a search command that asks the user for a string and finds the first line that contains that string. The search starts at the first line currently displayed and stops at the end of the file. If the string is found, the line that contains it is displayed at the top. In case the user enters a string X that does not occur in the file, the program should print the error message: ERROR: string "X" was not found.  Attached is the first lines of the .txt file

C++ Add a search command that asks the user for a string and finds the first line that contains that string. The search starts at the first line currently displayed and stops at the end of the file. If the string is found, the line that contains it is displayed at the top. In case the user enters a string X that does not occur in the file, the program should print the error message: ERROR: string "X" was not found.

Cassignm222 Assignment 2 features designing a program using pseudocode and then completing the program in Python using a list. M4Lab2 asks you to write a Drawing app in Python and Pygame using a list for the colors. Each lab asks you to write pseudocode that plans the program's logic before you write the program in Python and to turn in three things: 1) the  pseudocode, 2) a screenshot of the output, and 3) the Python program. # Step 1: Define a colors list to describe 3 colors.# Hint, use their RGB number values Step 2: define a radius variable for your pen at 5, 10 or 15# Test them to see which radius you prefer and use it # Step 3: write the elif for pressing button 2, similar to button 1        # Step 4: write the statement for button 2's color # Step 5: write the else statement for button 3  # Step 6: choose a color from the list??

•is Valid Phone Number(): ReturnsTrue if the provided phone number (represented as a string) is cor-rectly formatted, otherwiseFalse. To be considered correctly formatted, phone numbers must bewritten as###-###-####, where#is a digit between 0 and 9 .•validatePhoneBook(): A phone book is a list where each entry is a phone book record (represented asa dictionary; see below for more details). This function checks each phone book record in the phonebook for correctly formatted phone numbers.A phone book record is a dictionary which initially has two keys: the key"name"mapped to thecontact’s name (string) and the key"phone number"mapped to that contact’s phone number (alsoa string).validatePhoneBook()adds a new key"valid"to the record with the valueTrueif the phonenumber is formatted correctly, otherwiseFalse.   1. Write white-box and black-box tests for the function is ValidPhoneNumber(). You should do this with-out Python, either on paper, or in a simple document. Don’t worry about…

X609: Magic Date A magic date is one when written in the following format, the month times the date equals the year e.g. 6/10/60. Write code that figures out if a user entered date is a magic date. The dates must be between 1 - 31, inclusive and the months between 1 - 12, inclusive. Let the user know whether they entered a magic date. If the input parameters are not valid, return false. Examples: magicDate(6, 10, 60) -> true magicDate(50, 12, 600) –> false

Lab Goal : This lab was designed to teach you how to use a while loop.   Lab Description (JAVA PROGRAMMING): Remove all occurrences of the removal string from the original string. Each time you take out the removal string you must also remove the letter that preceded the removal string. After you remove a string and its leading character, you must check to see if any more occurrences of the removal string exist. Sample Data : xR-MxR-MHelloxR-M R-M sxsssxssxsxssexssxsesss xs fuxqwexqwertyxqwexqwe     Sample Output : xR-MxR-MHelloxR-M - String to remove R-M Hello sxsssxssxsxssexssxsesss - String to remove xs sesss fuxqwexqwertyxqwexqwertyrtyxqwertyrtyn - String to remove qwerty fun dogdogcatddodogdogdoggog - String to remove dog catgog   algorithm help use indexOf to look for more removals while you have more removals { take out the current removal using substring use indexOf to look for more removals }           I need help with assignment: "String Cleaner"   StringRemover.js: //(c) A+…

Python Programming