3. (Eliminate duplicates) Write a method that returns a new array by eliminating the duplicate values in the array using the following method header: public static int[] eliminateDuplicates (int list) Write a test program that reads in ten integers, invokes the method, and displays the result.
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- Complete the following Java method. This method takes in an array of Strings. The method's task is to find out how many times the most common character frequency appears in all of the array's Strings. As an example, for the array ["mouse", "cat", "dog"], the method should return 9, since the characters "m", "u", "s", "e", "c", "a", "t", "d", and "g" appear only once and this frequency (1) appears 9 times. The character "o", appears twice. This frequency (2) appears only once. Therefore, 9 must be returned. Also, if a character appears multiple times in one String, you must count every occurrence. For example, in the word "houses", the character "s" appears twice. Therefore, each occurrence of "s" must be counted. If there is a tie at the completion of the method, you must still return how many times the most frequent character frequency occurred. Furthermore, in your implementation, you must make use of the Java Class Library's HashMap class in order to map particular characters to…Q1: Write a program to accomplish the following tasks:- a) Write a method to print the ArrayList in the reverse order b) Write a method to sort the ArrayList, and display the data after sorting c) Write a method to print the largest and the smallest element in the ArrayList d) In the main method ask user to enter 10 integers, store them in the ArrayList, pass the ArrayList to above methods, and then display the result6.29 LAB: Remove all even numbers from an array Use Java programming. Write the removeEvens() method, which receives an array of integers as a parameter and returns a new array of integers containing only the odd numbers from the original array. The main program outputs values of the returned array. Hint: If the original array has even numbers, then the new array will be smaller in length than the original array and should have no blank elements. Ex: If the array passed to the removeEvens() method is [1, 2, 3, 4, 5, 6, 7, 8, 9], then the method returns and the program output is: [1, 3, 5, 7, 9] Ex: If the array passed to the removeEvens() method is [1, 9, 3], then the method returns and the program output is: [1, 9, 3] import java.util.Arrays; public class LabProgram { public static int[] removeEvens(int [] nums) { /* Type your code here */} public static void main(String[] args) { int [] input = {1,2,3,4,5,6,7,8,9};int [] result = removeEvens(input); // Helper method…
- - Use java RECURSION to print out this shape. - You need to call the method 2 times - use 2 or 3 for loops hints: - for (int i = 0; i < ?????; i++) sout(" ") - for (int i = 0; i < ?????; i++) sout(symbol) - put different if statements when you call yourself, one gets activated when you go up, one gets activated when you go down. - This method should be used; public static void printShape4(int row, char symbol, int currentRow) { } !!! do not use other methods, everything should be inside this method6.28 LAB: Check if array is sorted Use java Programming Write the inOrder() method, which has an array of integers as a parameter, and returns true if the numbers are sorted (in order from low to high) or false otherwise. The program outputs "In order" if the array is sorted, or "Not in order" if the array is not sorted. Ex: If the array passed to the inOrder() method is [5, 6, 7, 8, 3], then the method returns false and the program outputs: Not in order Ex: If the array passed to the inOrder() method is [5, 6, 7, 8 , 10], then the method returns true and the program outputs: In order public class LabProgram {public static boolean inOrder(int [] nums) {/* Type your code here. */ }public static void main(String[] args) {// Test out-of-order example.int [] nums1 = {5, 6, 7, 8, 3};if(inOrder(nums1)){System.out.println("In order");}else{System.out.println("Not in order");}// Test in-order example.int [] nums2 = {5, 6, 7, 8, 10};if(inOrder(nums2)){System.out.println("In…4. Write a Python program that inputs integers until a 0 is encountered and then prints the maximum value entered up to that point.5. Write a Python function that inputs an array of integers and returns the maximum value in this array. Do not use the max method on array class
- State whether the statement are true or false. If the answer is false, explain why? " If there are fewer initializers in an initializer list than the number of elements in the array , the remaining elements are initialized to the last value in the initializer list.Exercise (Array and Method): Write a method called arrayToString(), which takes an int array and return a String in the form of {a1, a2, ..., an}. Take note that there is no comma after the last element. The method's signature is as follows: public static String arrayToString(int[] array) Also write a test driver to test this method (you should test on empty array, one-element array, and n-element array). Notes: This is similar to the built-in function Arrays.toString(). You could study its source code. Exercise (Array and Method): Write a boolean method called contains(), which takes an array of int and an int; and returns true if the array contains the given int. The method's signature is as follows: public static boolean contains(int[] array, int key) Also write a test driver to test this method. Exercise (Array and Method): Write a method called search(), which takes an array of int and an int; and returns the array index if the array contains the given int; or -1 otherwise. The…PART A: Note: The following code is written only in main -- you assume there is an array bag and you are not adding any methods to that bag. Write the main program to create two array bags of type string. Place 5 strings of your choice in the first bag and 5 strings (of your choice) in the second bag. Your program must:1) determine if there are any strings in the first bag that appears in the second bag as well. If there are, print there are repeated strings. Else print the bags have unique values. 2) Print the content of the both bags and if there are repeated values, print that value only once. PART B: Create two linkedBag objects of type string in main. Place 5 strings in the first bag and five strings in the second bag. Then your code must test if the two linkedBag objects are equal or not. You must traverse both linkedBags and test each items to see if they are the same. Then you must display a message saying the two linkedBags are the same or different. PART C: Write a…
- 6.19 LAB: Word frequencies - methods Define a method named getWordFrequency that takes an array of strings, the size of the array, and a search word as parameters. Method getWordFrequency() then returns the number of occurrences of the search word in the array parameter (case insensitive). Then, write a main program that reads a list of words into an array, calls method getWordFrequency() repeatedly, and outputs the words in the arrays with their frequencies. The input begins with an integer indicating the number of words that follow. Assume that the list will always contain less than 20 words.Exercise 1: //The max function the max between a and b, it returns a if a == //b public double max(double a, double b); //The mult function returns the result of a * b public double mult(double a, double b); //The exist in array function returns the index of the element //‘a’ if //‘a’ exist in array ‘arr’ otherwise returns ‘-1’ public int existsInArray(int [] arr, int a); //Are array equals method compares two arrays and returns true // if the elements of array ‘a’ are equal to elements of array // ‘b’, element by element. If equals it returns 0, it returns - // 1 if not public int areArrayEquals(int [] a, int [] b); Devise four executable test cases for every method in the JUnit notation. See the attached handout for a refresher on the notation.Write one or more statements that perform the tasks for an array called fractions : Declare an array with arraySize elements of type double , and initialize the elements to 0.