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- 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,…If New character set is given, it is "qwertyuiopasdfghjklzxcvbnm."The first character is q, and we will place the letter "a" (for position) at index q during hashing, i.e. (17th).Our new character set after hashing is "kxvmcnophqrszyijadlegwbuft."write a java program to achieve the same for any given string.Write a for loop to print all elements in courseGrades, following each element with a space (including the last). Print forwards, then backwards. End each loop with a newline. Ex: If courseGrades = {7, 9, 11, 10}, print: 7 9 11 10 10 11 9 7 Hint: Use two for loops. Second loop starts with i = courseGrades.length - 1. import java.util.Scanner; public class CourseGradePrinter {public static void main (String [ ] args) {Scanner scnr = new Scanner(System.in);final int NUM_VALS = 4;int [ ] courseGrades = new int[NUM_VALS];int i; for (i = 0; i < courseGrades.length; ++i) {courseGrades[i] = scnr.nextInt();} /* Your solution goes here */ }}
- Use the right loop for the right assignment, using all the follow- ing loops: for, while without hasNext(), while with hasNext() and do-while. So I cannot use array. it has to be done in java.Write a program that obtains the executiontime of external sorts for integers of size 6,000,000, 12,000,000, 18,000,000,24,000,000, 30,000,000, and 36,000,000. Your program should print a tablelike this: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.
- Add a print statement at the end of the selectionSort method that prints out the number of swaps that took place during the sort. You should not modify the run() method. Use java. SelectionSort class: import java.util.Arrays; public class SelectionSort extends ConsoleProgram{public void run(){int[] array1 = {9, 8, 7, 6, 5, 4, 3, 2, 1};int[] array2 = {5, 6, 4, 8, 9, 7, 3, 1, 2};System.out.print("First array: ");System.out.println(Arrays.toString(array1));System.out.print("Second array: ");System.out.println(Arrays.toString(array2));System.out.println(); // sort first arrayselectionSort(array1);// sort second arrayselectionSort(array2); System.out.print("First array sorted: ");System.out.println(Arrays.toString(array1));System.out.print("Second array sorted: ");System.out.println(Arrays.toString(array2));}/** Selection sort takes in an array of integers and* returns a sorted array of the same integers.*/public static int[] selectionSort(int[] arr){int currentMinIndex;for (int i = 0; i…Use an array and two index variables. Write functions or methods push, pop, and sizeof. Then write a main function or method that will allocate the stack at n=10 and push some strings in ii, print out the size, and then pop some strings from it. Note make stack be be able to hold string variable type. javaIn this assignment, you will compare the performance of ArrayList and LinkedList. More specifically, your program should measure the time to “get” and “insert” an element in an ArrayList and a LinkedList.You program should 1. Initializei. create an ArrayList of Integers and populate it with 100,000 random numbersii. create a LinkedList of Integers and populate it with 100,000 random numbers2. Measure and print the total time it takes to i. get 100,000 numbers at random positions from the ArrayList 3. Measure and print the total time it takes to i. get 100,000 numbers at random positions from the LinkedList 4. Measure and print the total time it takes to i. insert 100,000 numbers in the beginning of the ArrayList 5. Measure and print the total time it takes to i. insert 100,000 numbers in the beginning of the LinkedList 6. You must print the time in milliseconds (1 millisecond is 1/1000000 second).A sample run will be like this:Time for get in ArrayList(ms): 1Time for get in…
- please name this cards.py. You may use the following code in your program: import random SUITS = "♠ ♡ ♢ ♣".split()RANKS = "2 3 4 5 6 7 8 9 10 J Q K A".split() def create_deck(shuffle=False): """Create a new deck of 52 cards""" deck = [(s, r) for r in RANKS for s in SUITS] if shuffle: random.shuffle(deck) return deck This code creates a random deck of cards (each card is a tuple consisting of a rank and suit). You are to ask the user how many 5-card hands to play and will keep track of the following poker hands. You will need to reshuffle the deck as many times as necessary to get the required number of hands. An example run of the program is as follows. Enter the number of hands to deal: 10000Hand % of Hands Hands of Type2 of a kind 41.290% 4129 3 of a kind 1.970% 197 4 of a kind 0.010% 1 2 pair 4.860% 486 Full house 0.150% 15 Flush 0.220% 22 If you deal enough…Write Java statements that use a for each loop to cycle through all the elements in an ArrayList of doubles named grades.Computer Science This is to be done in Java using Sets (HashSet). The task is to find out how many people you typically need to meet before you meet one person born each day of the year. You re assuming there are 365 days in a year (no leap years). This means a birthday can be represented by a random number from 1 - 365. Using a set, the task is to keep track of the birthdays you have already encountered. Run the whole trial 100 times to take an average. THE OUTPUT OF THE NUMBER OF PEOPLE will vary due to it being a random number but it should be in the 2000s.