Input: arr[]={10, 20, 30} Output: 60. import java. Converting String into Bytes: getBytes () method is used to convert the input string into bytes []. Print the sum. Dec 26, 2023 · Approach 1: Using BigInteger class. Input: arr [] = {5, 3, 7, 4, 2} Output: Maximum is: 7. Stop. The integer does not have leading zeros. Write efficient functions to find the floor and ceiling of x. pow() is an inbuilt method of StrictMath class used to find the power value i. Minimum is: 2. Declare a variable to store the sum. println(Arrays. Examples: Input: arr[] = {1, 3, 5} Output: 6 Explanation: There are six subarrays which can be formed from the array whose sum can be split as the difference of squares of two integers. May 4, 2017 · But some reason, I'm unable to output the array with the result stored, I've tried using System. Java program to find the sum of elements in an array using basic for loop. concat creates a new array that includes values from other arrays and additional items. How to Find the length of Multidimensional Array in Java. Update: Yes, there are these methods String Mar 18, 2024 · Method 2: By using the sort() method. Java program to find the sum of elements of an array - To find the sum of elements of an array. Scanner; public class Jul 3, 2015 · 7. Approaches. Input: str = “123” Output: 123 Explanation: Given input is in Oct 18, 2023 · First pass is to find the maximum number. This approach involves iterating over each element in the array and adding it to a running sum. Before diving into the code, it's essential to understand the concept of Jul 1, 2014 · I find this quite readable: static int[] merge(int[] a, int[] b) {. b : the second integer value. Dec 13, 2023 · Last Updated : 13 Dec, 2023. e sort(). This would facilitate detection of multiple duplicates when the same element might occur more than 2 times. Calculate the midpoint of the array as mid = (low + high) // 2. stream. sort(char c[]) method to sort character array. sort() method uses merge sort or Time Sort to sort the array elements. For (int num : array ) Here int is data type for num variable where you want to store all arrays data in otherwords you can say the destination where you want to give all component of arrays. If you have an array of a May 3, 2024 · Given an array, write functions to find the minimum and maximum elements in it. In this method we take take the string argument and then executes the given operation. You can also do max, sum, average, The getAsInt method is used to get the value from the OptionalInt Jul 12, 2016 · Java arrays have a fixed length, you could use a Collection; or you'll have to copy the array to add a new element. Iterate through the array, adding each element Java Program to calculate the sum of array elements in Java Here is our complete Java program to calculate the sum of all elements of the given array. toOctalString () to convert a decimal to binary or octal. Traverse through each element (or get each element from the user) add each element to sum. public static void fill (int[] a, int val) Java Object clone () creates a copy of the object. nextInt(array. If we find any number that divides, we return false. Print the average. The most simplest way to find min and max value of an element is to use inbuilt function sort () in java. sqrt() Function. The first is a function and the second is the initial value. The reduce() method will iterate through every element in the array. Now use Arrays. 7 . Your requirement to not use inbuilt methods is going to make this very difficult. sort () is an inbuilt function from java. BigInteger provides analogues to all of Java’s primitive integer operators, and all relevant methods from java. asList(b)); // skips duplicate as per Set implementation. Assuming you already have a sum function for simple arrays of numbers, you can implement a function that will sum the totals of all keys over an array of objects in just two expressions. Dec 1, 2016 · You could use the Long. Update the sum in each iteration. getBytes() method) in reverse order into. * The IntStream. I checked how java does it. Step 7: Print sum. The addition is performed digit-by-digit, starting from the rightmost digit of each arrays, and any carry is Oct 5, 2023 · Method 2: Using inbuilt function The idea is to use the inbuilt function to find the cube root of a number which returns floor value of the cube root of the number N. For this, we use inbuilt method provided by Java in Arrays class i. Mar 6, 2024 · Simple Program to Check Prime in Java. Using this method, we can calculate sum of all elements of a list iteratively without the need for recursion or higher-order functions. Improved Method in Java to Check Prime. Don't modify the array. sum += i; Sum of array in Java using inbuilt function. For example, if we have a two-dimensional array arr then we can find parent length using arr. here are 2 methods that convert from binary to decimal and from octal to decimal, you could also convert from octal to decimal then to binary using these methods. asList () must have a return type of Jan 18, 2017 · The code I included is not the entire file. com W3Schools offers free online tutorials, references and exercises in all the major languages of the web. The task is to find all the unique integers that follow the given requirements: The integer consists of the concatenation of three elements from digits in any arbitrary order. It gives rise to three special results: The method returns NaN when one argument is NaN and the other is a nonzero argument or NaN. #include<iostream>. I am sure the problem lies within my code that I included above. We can modify the comp () function to obtain the desired result. addAll(Arrays. If both are same then print any of them and Jan 5, 2014 · 3. And formatted output. length. Integer. We use two parameters. ArrayList; import java Mar 14, 2024 · Do refer to default array values in Java. stream() method. length - 1 ]; Copy. . , Math. This method takes two parameters: an integer array ‘a’ and, specifically, an integer ‘Size’, which represents the number of elements in the array. To get a stream of array elements, we can use the Arrays. Here, we call the of () method of the IntStream class to get a stream of array elements. The method iterates through the array using a loop and accumulates the sum of all elements Jun 17, 2021 · JavaScript provides one more version of the reduce () method, which works on the last element of the array, instead of the first element, and its name is " reduceRight () ". I searched but in most of the places charAt() is used which is again a inbuilt function. Below is the Java program to implement the above approach: true. Obtaining an array is a two-step process. Also, Jun 6, 2024 · Array reverse or reverse a array means changing the position of each number of the given array to its opposite position from end, i. util package. It uses Scanner to take user input from the command prompt and enhanced for loop of Java 5 to loop over the array. Aug 14, 2023 · Syntax : sum (iterable, start) iterable : iterable can be anything list , tuples or dictionaries , but most importantly it should be numbers. This method involves three steps: Divide, Conquer and Combine. If start is not given in the syntax , it is assumed to be 0. They are also called subroutines or Checks whether a string contains the exact same sequence of characters of the specified CharSequence or StringBuffer. May 15, 2021 · Arrays. asList(1, 2, 3); // get the sum of the elements in the list int sum = MathUtils. In C/C++, we need to use the sizeof operator. Set<Integer> set = new HashSet<>(Arrays. The methods of this class can be used by the class name itself. Java Program to find Sum of Elements in an Array using For Loop. collect(), and IntStream. Initialize the array. sum () is a built-in method in java that returns the sum of its arguments. If arr1 [i] is smaller than arr2 [j] then print arr1 [i] and increment i. For this exact question this isn't helpful given the constraint to not use an array or collection. e. return set. In both the cases sort() method sequentially sort the elements of an array. Jun 8, 2015 · We store a serie of numbers in an array type column and need to SUM them in a query, preferably from n-th to m-th element. uti May 21, 2024 · Given an array of N elements, the task is to find the Sum of N elements without using loops (for, while & doWhile) and recursion. Example: In the array [2, 3, 6, 6, 5] maximum = 6 and second maximum = 5 , since it has the minimum difference to the maximum element 6 - 5 = 1 the solution for second largest = 5. Possible two more syntaxes. 2 days ago · Java ArrayList is a part of the Java collections framework and it is a class of java. length, similarly if a number is at position 2 then its new position will be Array. out. The algorithm used in this approach is as follows: Step 1: Declare and initialize an array. Apr 24, 2024 · array::cbegin() is a built-in function in C++ STL which returns a const_iterator pointing to the first element in the array. It returns the accumulated result from the last call of the callback function. Step 2: Loop through the array by incrementing the value of the iterative variable/s. Examples : 6 days ago · To find union of two sorted arrays using two pointers, follow the following procedure : Use two index variables i and j, initial values i = 0, j = 0. You can pass data, known as parameters, into a method. It returns a sequential Stream with the elements of the array, passed as parameter, as its source. No loops, hardcoded property names, anonymous functions or if/else required. long sum = 0; for(int i : absencesArr) {. Step 4: Repeat step 5 until i<arr. Though, it may be slower than standard arrays but can be helpful in programs where lots of manipulation in the array is needed. It then calls the findSumOfArray method and prints the result. Below is the syntax: array. This method assigns the specified data type value to each element of the specified range of the specified array. // sorting on basis of 2nd column. 2A By using the sort() method- natural sorting. lang. length – 1, and so on. The stream method of the utility class Arrays gives you an IntStream on which you can use the min method. to the length of the input string. Sep 13, 2022 · Minimum is: 1. Write a Java Program to find the Sum of Elements in an Array using For Loop, While Loop, and Functions with an example. In this article, we will look at some of the commonly used inbuilt functions in C++. I do have different arrays initialized to use as tests, as well as a main method that's already declared properly. In fact, the value of 20! is the largest one can represent in a Java long. Example: To demonstrate utilizing the `join` method and `eval` function to dynamically calculate the sum of elements in a given array. Jump statements interrupt the sequential execution of statements, so that execution Sep 28, 2009 · You can simply use the new Java 8 Streams but you have to work with int. } This informs the compiler that you are passing a one-dimensional array to the function. util. Different methods discussed on this page are : Method 1 : Using Iteration; Method 2 : Using recursion (Top-Down Approach) Method 3 : Using recursion (Bottom-up Approach) Method 1 : Create a variable say sum = 0. Method: 1. Step 1: START. result = calculateSum(num); However, notice the use of [] in the function definition. Start a for loop from index 0 to the length of the array – 1. Arrays; import java. This method is overloaded for arrays of int, double and long type. You can use the following steps to find the sum of an array: 1. And you should consider that there may be a very large number of students, so I would probably use a long for sum. sort : An built-in feature of Java. And, then use the sum () method to get the sum of array in Java. Here's is how we can call the addNumbers() method. Syntax: // Makes all elements of a[] equal to "val". Jul 30, 2015 · The PHP function array_sum also does a loop internally, There is little value in using Integer with java's auto-boxing features here. We can use min_element () and max_element () to find minimum If I had: ArrayList<Double> m = new ArrayList<Double>(); with the double values inside, how should I do to add up all the ArrayList elements? Jan 8, 2024 · int lastItem = array[array. Second, you must allocate the memory to hold the array, using new, and assign it to the array variable. As we have to place negative numbers first and then positive numbers. start : this start is added to the sum of numbers in the iterable. May 16, 2024 · Given an array containing digits[], where each element is a single digit integer. for num in arr: total += num. Get a Random Value from an Array. long decimal = 0; int power = 0; Sort an Array - Level up your coding skills and quickly land a job. Divide: Divide the array into smaller subarrays until each subarray has only one Apr 14, 2016 · Given an array A of 10 ints, initialize a local variable called sum and use a loop to find the sum of all numbers in the array A. If you don't do this, the rest of the fields will be 0 and can mess up the proper min and max values. Start with an empty subarray, add elements to the subarray until the sum is less than x. Assume that the array is sorted in non-decreasing order. . how to count string length in java like in C mentioned above. static int arr[] = { 12, 3, 4, 15 }; See full list on baeldung. boolean. It provides us with dynamic arrays in Java. 1. Define a function that takes an array and two indices low and high. The method adds two integers together as per the + operator. Arrays. Methods. One straightforward way to find the sum of all elements in an array is by using a for loop. ,valueN]; var output = variable. Output: 15. Thus, in Java, all arrays are dynamically allocated. Dec 21, 2021 · If a subarray has sum greater than the given sum then there is no possibility that adding elements to the current subarray the sum will be x (given sum). Java Multidimensional arrays have multiple length properties, each for every dimension basis. Apr 29, 2024 · Auxiliary Space: O (1) Sum of elements of an array using Divide and Conquer: The idea behind this approach is to utilize the divide and conquer strategy to find the sum of elements in a given array. Idea is to use a similar approach to a sliding window. String. There is a way in C programming for(i = 0; s[i] != '\0'; ++i); . Return Value: The function returns a const_iter Mar 9, 2016 · Question was asked to find the length of a String in Java without using any inbuilt functions like length(), toCharArray()? My approach was to somehow convert it into charArray so that we can itterate and find the length. stream() method import java. Algorithm: Initialize an array arr and a variable sum. The second loop is to enumerate over the array i enabling us to access the numbers in there and add it to the sum1 variable. // calls the method addNumbers(); Working of Java Method Call Sep 10, 2022 · It is For Each Loop or enhanced for loop introduced in java 1. Putting that together into something like. The loop continues until the index reaches the length of the list, adding each element to the total sum. endsWith () Checks whether a string ends with the specified character (s) boolean. In this approach we will create 2 objects of BigInteger and pass string in it then add simply add those objects using add() method. Step 3: Print out each element of the array. Java. May 28, 2024 · Given an array and is the task to find the Sum and Product of the values of an Array using JavaScript. Append a New Item to an Array. Here, we call the of() method of the IntStream class to get a stream of array elements. The main method initializes an array with sample values. However, the rest of the file was already given, only the snip of code I included was what I added to the file. In the above example, we have declared a method named addNumbers(). 5. In Java 8, there is a new API introduced for sorting which is Parallel Sorting. The syntax is: arr. #include<algorithm>. Java Methods. stream() method, you can use the filter() method to filter out elements that you don't want to include in the sum. They are: Sum of the subarray {1} Jan 9, 2021 · Hi, Is there any way by which we can constraint addition of array element without using sum() inbuilt method? I tried below code but not working. A simple solution is to iterate through all numbers from 2 to n – 1 and for every number check if it divides n. reduce(), Stream. With the usage of this method, it guarantees that any modifications to b, will not alter the original array a, as shown in Calling a Method in Java. Examples: Input: str = “985632” Output: 985632 Explanation: Given input is in string form and returned output is in integer form. We have to just pass compare function with proper arguments. This was my answer that I submitted: sum = 0; while( A, < 10) { sum = sum += A; } Dec 30, 2023 · Enter the length of the array: 5 Enter the elements of the array: 10 20 30 40 50 The sum of the array is 150 ## 3. Jan 14, 2022 · With the introduction of Java 8 Stream, we can easily get a sum of all array elements using the Stream. This method is used to evaluate the string. cbegin() Parameters: The function does not accept any parameters. length The method arr. false. Example: Java Code // Java program to demonstrate Arrays. min () and Collections. The class hierarchy is as follows: Feb 26, 2024 · Sum All The Items In Python List Using While Loop. Exampleimport java. Initialize the value of sum=0. The comp () function in this code rearranges the given array in the Jul 31, 2015 · Edit: It is also possible to have values higher than 64 given that you create a function that holds an array of bytes like the BitSet class. Recursive Solution. Print sum. Jun 7, 2024 · The reduce() method provides a functional programming approach to summing array elements. StrictMath. Step 2: Initialize Array arr [] Step 3: Declare sum = 0. Array in Java is index-based, the first element of the array is stored at the 0th index, 2nd element is stored on 1st index and so on. In every iteration, perform sum = sum + arr [i]. Below is the code for the same. Calculate the average and return it. fill () method is in java. It cannot be used to modify the element in the array which is possible using array::begin(). Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more. System. To pass an entire array to a function, only the name of the array is passed as an argument. sum(ints); Share Improve this answer Oct 14, 2023 · Approach 2: Iterative approach: The function “addArrays” that takes two arrays of integers “arr1” and “arr2” of sizes “n” and “m” respectively. Unlike C/C++, we can get the length of the array using the length member. Syntax : public static int sum( int a, int b) Parameter: The method accepts two parameters that are to be added with each other: a : the first integer value. Declare a sum variable there and initialize it to 0. Random object we can easily get any value from our array: int anyValue = array[ new Random (). Note: It is not mandatory to use all the elements of the given array to build the two arrays. toArray(new int[0]); This uses both duplication and built-in methods, but it's clear and concise. concat( arg1, arg2 ) It accepts any number of arguments – either arrays or values. public long binaryToDecimal(String binary) {. In Java, array is an object of a dynamically generated class. In each iteration, perform sum = sum + arr [i]. This class provides static methods to dynamically create and access Java arrays. Let’s see a few examples below: Sep 2, 2023 · Advertisements. It also has overloaded versions, which allows you to get a sum of elements between the Feb 19, 2023 · The reduce() method executes a reducer function for elements of an array. reduce(function(total, current, index, arr), initialValue) Where: Enter no. The simplest approach is use BigInteger class. It consists of only static methods and the methods of Object class. Aug 30, 2013 · int small = getMinValue(array, length); // actually print. println( "Max: " + large + " Min: " + small ); Then you will have to pass length into the methods to determine min and max and to print. Below is the Java example illustrating the printing elements of an array. Arrays which is used to sort an array of elements in optimized complexity. So, that value at 0th position will min and value at nth position will be max. After the termination of the loop, print the value of the sum. Best of luck! – Jul 3, 2023 · Python Program to Find Sum of Array Using Divide and conquer. Feb 10, 2023 · Given a sorted array and a value x, the ceiling of x is the smallest element in an array greater than or equal to x, and the floor is the greatest element smaller than or equal to x. But as this method requires a list type of data we need to convert the array to list first using above explained “ aslist () ” function. Aug 23, 2023 · The method used to find the sum of array elements in the provided Java code is called `SmOfArr`. Jan 11, 2024 · Inside the method, it iterates through the array using an enhanced for loop and accumulates the sum. Simple method: It uses a simple method to access the array elements by an index number and use the loop to find the sum and product of values of an Array using JavaScript. Oct 6, 2022 · Here, we will discuss different methods to find the required sum of the elements of the array. I would prefer the for-each loop. Example 1: This example uses a simple method to find the sum of Array eleme Dec 22, 2022 · Given an array arr[], the task is to count all subarrays whose sum can be split as the difference of the squares of two integers. Jan 26, 2023 · Initialize an array arr and a variable sum. Jan 10, 2023 · The Arrays class in java. using namespace std; bool compare(int *a, int *b){. We can simply use sort on row or column basis using inbuilt sort function in c++. Any suggestion ? class c; rand logic [7:0] a []; constraint array_… Sep 12, 2022 · The java. There are numerous approaches to Sorting the given array in descending order in Java. Feb 18, 2016 · Here is a fun exercise in functional programming. The frequency of 2 in the ar Feb 26, 2024 · Using the eval() function . Example: To illustrate the use of `reduce()` method to compute the sum of all elements in an array and then prints the result Algorithm. In this tutorial, you learned how to find the sum of an array in Java. A few of them are listed below. Given a string str, the task is to convert the given string into the number without using any inbuilt function. Its syntax will look like below: Syntax: var variable = [value1, value2, value3…. Call a method that will calculate the sum and average of all the elements in an array. And it returns a vector that contains the sum of the two arrays. Further, as of Java-8, you can accomplish the task at hand as follows: May 11, 2024 · In this case, in order to calculate the sum using the methods shown in previous examples, we need to call the map() method to convert our stream into a stream of integers. Store the bytes (which we get by using. I know there are various inbuilt functions, using which we can count string length like lastIndexOf(), by converting a string into a char array and counting iteration. Set the value of sum=0. 4. This program allows the user to enter the size and Array of elements. public long factorial(int n) {. sum() method only works with arrays of integers. It is the basic building block of a C program that provides modularity and code reusability. If the sum is greater than x, remove elements May 21, 2009 · Because factorial grows so quickly, stack overflow is not an issue if you use recursion. If arr1 [i] is greater than arr2 [j] then print arr2 [j] and increment j. sum() method. length)]; Copy. if a number is at position 1 then its new position will be Array. If low == high, return the element at that index. Run a loop to iterate over the entire Oct 16, 2023 · The purpose of inbuilt functions is to provide common and essential functionality that is frequently required in the programming. * You can also use the map() method to convert the elements in the array to a different type before summing them. Feb 28, 2024 · Given an array arr[], the task is to determine the maximum possible size of two arrays of the same size that can be created using the given array elements, such that in one array all the elements are distinct and in the other, all elements are the same. max () methods. Sep 23, 2023 · Reversed word: skeeG. Explanation: The maximum of the array is 5. This method takes a reducer function that accumulates the sum of the array elements and an initial value for the accumulator. The frequency of 1 in the array arr[] is 1. asList(a)); set. 🧐 Understanding the Concept of Sum of Array. Why use methods? Jun 21, 2022 · To get the minimum or maximum value from the array we can use the Collections. So the following method will either calculate factorial (n) or throw an IllegalArgumentException if n is too big. As a result, we can use Stream. Recursively find the sum of the left subarray as left_sum = sum_of_array (arr, low, mid). Approach 1 (Greedy): The problem can be solved using the greedy approach: The solution is to compare each array element for minimum and maximum elements by considering a single item Dec 7, 2018 · java. Next, it will find the sum of all the existing elements within this array using For Loop. Step 5: sum = sum + arr [i] Step 6: Print “Sum of all elements in array :”. The programming statements of a function are enclosed within { } braces, having certain meanings and performing certain operations. , the value of one argument raised to the power of another argument. Mar 25, 2020 · The reduce() method reduces an array and returns a single value. Examples: Input: arr[] = { 1, 0, 5, 5, 2}, T = 3 Output: 0 1 2 Explanation: The frequency of 0 in the array arr[] is 1. The sqrt() function is used to determine the square root of the value of type double. Methods are used to perform certain actions, and they are also known as functions. copyValueOf () Returns a String that represents the characters of the character array. IntStream; public class SumOfArray { public static void main (String [] args) { //Initialize array int [] a = {8,4,2,2,7 Sep 13, 2023 · Given an array arr[] of size N and an integer T representing the count of threads, the task is to find all non-repeating array elements using multithreading. stream() The stream(T[] array) method of Arrays class in Java, is used to get a Sequential Stream from the array passed as the parameter with its elements. By using the java. of elements:5 Enter all the elements: 8 4 2 2 7 Sum of all the elements of array:23 Sum of array in Java using inbuilt function. Apr 22, 2018 · 3. util package is a part of the Java Collection Framework. Below is the implementation of the above approach: Sep 5, 2023 · A function in C is a set of statements that when called perform some specific task. First, you must declare a variable of the desired array type. Here is an example of sorting 2D array column wise. Second pass is to find the element that has minimum difference with the maximum element as compared to other array elements. In this method we will use the eval() function. Now, to use the method, we need to call it. Create a temporary byte[] of length equal. This class is found in java. sum (a) : a is the list , it adds up all the Mar 14, 2024 · Sorting is a process of arranging items systematically. Mar 1, 2019 · 1. Sep 4, 2023 · We often need to sort array while programming. Example to find the sum of an Array using for Loop: total = 0. (sum)Initialize it with 0 in a loop. Further, you'll need some way to indicate that input is complete. Arrays class. Jan 6, 2021 · Does JS have a number sum method? i. sum() to calculate the sum: May 24, 2023 · Method 1: Using a For Loop. This page contains all methods in Python Standard Library: built-in, dictionary, list, set, string and tuple. reverseOrder Apr 3, 2023 · The java. Approach: Unconditional Jump Statements can be used to solve this problem. After the completion of the loop, print the value of the sum. Summary. If the cube of this number equals N, then N is a perfect cube otherwise N is not a perfect cube. In each step we add the current element into the sum variable and once the Dec 28, 2023 · * When using the Arrays. The result is a new array containing items from arr, then arg1, arg2 etc. and the minimum of the array is 1. Mathematically it refers to [Tex]a^b [/Tex]. class Test {. A method is a block of code which only runs when it is called. Feb 14, 2021 · It would be better to use an intermediate array of booleans to track the duplicates and define the length of the result array. float calculateSum(float num[]) {. Syntax: array_name. toBinaryString () or Long. Mar 1, 2023 · In c++ STL, There is an inbuilt function std::sort (). And when loop terminates, we get the final sum. The logic inside the method should be: for (int[] i : array) for(int num : i) sum1+=num; i is a type int[] not an int. Ex Jul 21, 2021 · // create a list List<Integer> ints = Arrays. Procedure: The main logic is to toCharArray() method of the String class over the input string to create a character array for the input string. length, and child length using arr[index]. Dec 15, 2023 · Printing elements of an array Using loops. toString(myList)); and printing them one at time, it works for one the arrays i created, but when trying to modify the array through a loop, it refused to output anything, no error, nothing as though nothing is there. Math. We also have to keep zero’s (if present) between positive and negative numbers. This is the best place to expand your knowledge and get prepared for your next interview. sum(num1,num2) or something? The reason is that I have 2 arrays of like 10 elements each, and I want to combine them into a single array by applying a custom function on each pair of elements (such as addition or multiplication). And, then use the sum() method to get the sum of array in Java. Also, we need to make sure the method equals (and possibly hashCode) is properly overridden in ItemList: Dec 15, 2022 · Using clone() method; Using arraycopy() method; Using copyOf() method of Arrays class; Using copyOfRange() method of Arrays class; Method 1: Iterating each element of the given original array and copy one element at a time. reduceRight(function); There are multiple approaches to do this, Here I'm sharing follow two methods by which it can be achieved. create an empty variable. The array may contain duplicates. Using Collections. Note: “The array you are passing to the Arrays. 2. Using Comparator Arrays. igytnjyynrwkpfhmlpew