you wanted to know the position of the letter v (i.e. return 2) in the String str containing the word "Java", which of the following code should you use? * O mid(2,str); O str.indexOf(v); Ostr.charAt(2); O str.position(v');
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- If you wanted to know the position of the letter v (i.e. return 2) in the String str containing the word "Java", which of the following code should you use? min(2,str); str.charAt(2); O str.indexOf('v); indexOf(str,'v'); str.position ('v')String spell = "Redikulus"; How would you find the index of the 'u' just before the last 's' using a single line of code? Multiple answers may be correct. Given the string String spell = "Redikulus"; How would you find the index of the 'u' just before the last 's' using a single line of code? Multiple answers may be correct. A. spell.substring(5, spell.length()).indexOf('u'); B. spell.indexOf('u', 5); C. spell.lastIndexOf('u'); D. spell.contains('u'); E. spell.indexOf('u', spell.length() - 2); F. spell.indexOf('u', spell.indexOf('l'));Java - Create a flowchart and write the method signature for the following: a. A method that takes a String of 13 digits creates and returns an array of ints with 13 positions. The array should contain the integer equivalents of the digits in the original string.. a("123456789012") --> false a("1234567890123")--> true
- In java, without Arrays and using only String methods ( don't use String builder) // Question 17: In MS-DOS, a file name consists of up // to 8 characters (excluding '.', ':', backslask, '?', // and '*'), followed by an optional dot ('.' character) // and extension. The extension may contain zero to three // characters. For example, 1STFILE.TXT is a valid filename. // Filenames are case-blind. // // Write and test a method that takes // in a String, validates it as a valid MS-DOS file // name, appends the extensions ".TXT" if no extension // is given (that is, no '.' appears in FILENAME), converts // the name to uppercase, and returns the resulting string // to the calling method // If fileName ends with a dot, remove that dot and do not // append the default extension. If the name is invalid, // validFileName should return null. public String validFileName(String n) { }Signature will be public static void changeLetter(StringBuilder sb, String Letters) Make it so any letters from the second parameter found in the String Builder are converted to uppercase. Write in Java and use testcase examples as a reference.I can't figure out the error in this code. Heres the code: from tkinter import * class Calculator:# define the text on each buttonButtonValues=[['7','8','9','/'], ['4','5','6','*'], ['1','2','3','-'], ['0','C','=','+']]def __init__(self):self.Calc = Tk()self.Calc.title('Calculator') # Create two frames: frame1 is to house the display acreen# frame2 is to house all the buttonsself.frame1=Frame(self.Calc)self.frame2=Frame(self.Calc) #self.expression = ""self.equation=StringVar() # Create an Entry display and bind the entry to a StringVar instance# equation:# You can call set() to set a value in the entry or call get() to# get a value from the entryself.theDisplay = Entry(self.frame1, width=30, textvariable=self.equation)self.myButtons= [] # Define all the buttonsdef SetButtons(self):self.frame1.pack()self.frame2.pack(side=BOTTOM) self.theDisplay.grid(row=0) self.myButtons.append([])self.myButtons[0].append(Button(self.frame2,text=Calculator.ButtonValues[0][0],…
- This is the question: Write an application that displays the factorial for every integer value from 1 to 10. A factorial of a number is the product of that number multiplied by each positive integer lower than it. For example, 4 factorial is 4 * 3 * 2 * 1, or 24. The output would then be The factorial of 4 is 24. This is the code given: public class Factorials { public static void main (String args[]) { // Write your code here } }Please create a code that follows the directions below exactly, and have the output look just like the one in the picture provided. If possible, please refrain from using switch statements in the code. Insturctions: This assignment will assess your understanding of void and value returning static methods. Your cousin owns an automotive maintenance shop that performs routine maintenance on cars. He has asked you to write a program that will provide a list of services (and their respective prices) to users and allow them to choose any, or all, services they would like and display the final price, including a 28% labor charge, a 9% markup if the car is an import, and an 8% sales tax. Task To accomplish the above, do the following: Write the two methods outlined below. Test your program and screenshot your successful test. carMaintenance method This method should accept the make of the car as a parameter (e.g., BMW, Ford, Ferrari, etc.). It should display the services and their prices as…Problem 2: Complete the seperateDuplicateChars () method in Seperate Duplicates.java as follows: The method takes a String str as a parameter and returns a new String. The returned String should be exactly like str, but any identical characters that appear in a consecutive way must be separated by hyphens "-". You may ONLY use the following methods from the String class: charAt(), substring() and length(). Other than uncommenting the code, do not modify the main method in Seperate Duplicates.java. Sample runs provided below. Argument String str "Hello" "Bookkeeper" "Yellowwood door" "Chicago Cubs" Return String "Hel-lo" "Bo-ok-ke-eper" "Yel-low-wo-od do-or" "Chicago Cubs"
- in python "AnagramMake a method is_anagram_of(a,b) that tests if a is an anagram of b.A string a is an anagram of a string b, if it uses exactly the same letters, but the order can be different.Spaces are ignored, as well as capitalization.Examples of anagrams:"eleven plus two" - "twelve plus one""William Shakespeare" - "I am a weakish speller""Tom Marvolo Riddle" - "I am Lord Voldemort""Anagrams" - "Ars manga""television ads" - "enslave idiots"Counter examples:"bla" - "aalb""cat" - "tact"Hint: Make a dictionary that holds how often a letter occurs in a word."""def is_anagram_of(a, b):passCode with comments and output screenshot. Thank you!! Write a java method that receives a string containing letters of the English alphabet and then prints the Letters having unique frequencies. Notes: 1) Ignore letter case; Uppercase and lowercase letters are considered the same. 2) Do not use methods from the Arrays class.The internet enables people to network, join a cause, take a poll, etc. Your program will prompt the user for a description of a poll to be taken and then prompt 5 users for a response of 1-10 (1 being a 'poor' response; 10 being the 'best' response).Your program does not have to validate that the user entered 1-10. We'll do that type of checking later.Your program must use a string data type to store the poll description and a Python list data type to save the integer responses of the 5 user responses.Your output should list all the responses stored in the list, the highest given response, the lowest given response and the average of the 5 responses. See sample input and utput below.Review powerpoint 3, slide 21 for an example if you need one. Sample interactive run of your program: Give a simple description of the poll to be takenRate your understanding of the first 3 zyBook chaptersEnter a 1-103Enter a 1-1010Enter a 1-104Enter a 1-102Enter a 1-105Sample outputRate your understanding…