class BinaryNode { int element; BinaryNode left; BinaryNode right; Complete the method below: int isBalanced (BinaryNode t) { int leftCount=0; int rightCount=0; if (t == null) //empty tree, height is 0 return 0; if ((t.left== null) and (t.right== null) return 0; else {

Practice / Frequency of Characters Write a method that returns the frequency of each characters of a given String parameter. If the given String is null, then return null If the given String is empty return an empty map Example input: output: empty map explanation: input is empty Example input: null output: null explanation: input is null. Since problem output is focused on the frequency we can comfortably use Map data structure. Because we can use characters as key and the occurrences of them as value. Example input: responsible output: {r=1, e=2, s=2, p=1, o=1, n=1, i=1, b=1, l=1} explanation: characters are keys and oc values ences are

Matich the following statements with the correct data structure by clicking on the drop down arrow and selecting the correct choice.. You need to store a list of elements and the number of elements in the program is fixed. If most of operations on a list involve retrieving an element at a given index. You have to add or delete the elements at the beginning of a list. Linked List ArrayList Array

Using jGRASP please de-bug this /**This program demonstrates an array of String objects.It should print out the days and the number of hours spent at work each day.It should print out the day of the week with the most hours workedIt should print out the average number of hours worked each dayThis is what should display when the program runs as it shouldSunday has 12 hours worked.Monday has 9 hours worked.Tuesday has 8 hours worked.Wednesday has 13 hours worked.Thursday has 6 hours worked.Friday has 4 hours worked.Saturday has 0 hours worked.Highest Day is Wednesday with 13 hours workedAverage hours worked in the week is 7.43 hours*/{public class WorkDays{public static void main(String[] args){String[] days = { "Sunday", "Monday", "Tuesday","Wednesday", "Thursday", "Friday", "Saturday"}; int[] hours = { 12, 9, 8, 13, 6, 4}; int average = 0.0;int highest = 0;String highestDay = " ";int sum = 0; for (int index = 0; index < days.length; index++){System.out.println(days[index] + " has "…