You are given an integer array and a positive integer K. You have to tell if there exists i,j,k in the given array such that ar[i]+ar[j]+ar[k]=K, i≠j≠k.Input FormatThe first line of input contains T - the number of test cases. Its followed by 2T lines, the first line contains N and K - the size of the array and the number K. The second line contains the elements of the array.Output FormatFor each test case, print "true" if the arrays contains such elements, false otherwise, separated by new line.Constraints30 points1 <= T <= 1003 <= N <= 10070 points1 <= T <= 1003 <= N <= 1000General Constraints-100000 <= A[i] <= 1000000 <= K <= 100000ExampleInput35 601 20 40 100 8012 5412 45 52 65 21 645 234 -100 14 575 -80 1123 155 5 5Outputfalsetruetrue

Given an array of integers and a number K, check if there exist a pair of indices i,j s.t. a[i] + a[j] = K and i!=j.Input FormatThe first line of input contains T - the number of test cases. It's followed by 2T lines, first line of each test case contains N - the size of the array and K, and the next line contains N space separated integers - the elements of the array.Output FormatFor each test case, print "True" if such a pair exists, "False" otherwise, separated by newline.Constraints30 points1 <= T <= 1002 <= N <= 100070 points1 <= T <= 3002 <= N <= 10000General Constraints-108 <= K <= 108-108 <= ar[i] <= 108ExampleInput35 -15-30 15 20 10 -102 2010 104 7-4 0 10 -7OutputTrueTrueFalse

Sum of 2 NumbersGiven an array, check if there exist 2 elements of the array such that their sum is equal to the sum of the remaining elements of the array.Input FormatThe first line of input contains T - the number of test cases. It is followed by 2T lines, the first line contains N - the size of the array. The second line contains N integers - elements of the array.Output FormatFor each test case, print "Yes" if such elements exist, and "No" otherwise, separated by a new line.

Problem Statement You are given a function, int ElementsAndIndices(int arr[], int n); The function takes an integer array 'arr' of size 'n' as its arguments. Implement the function to find and return the number of array elements which are equal to their index value in array i.e. arr[k] = k, 0 <= k < n. Note: Indexing starts from 0. Return -1 if 'arr' is empty or None in case of python Example: Input: 10 1 12 3 5 8 9 7 12 23 Output: 3 Explanation: Index Element 0 10 1 1 2 12 3 3 4 5 5 8 6 9 7 7 8 12 9 23 Elements at index {1, 3, 7} are equal to their index values {1, 3, 7} respectively. Since, these are 3 elements, thus, output is 3. The custom input format for the above case: 10 10 1 12 3 5 8 9 7 12 23 (The first line represents the size of the array, the second line represents the elements of the array) Sample input -3 0 1 3 5 7 Sample Output 1 The custom input format for the above case: 6 -3 0 1 3 5 7 (The first line represents the size of the array, the second line represents the elements of the array) Instructions : This is a template based question, DO NOT write the "main" function. Your code is judged by an automated system, do not write any additional welcome/greeting messages. "Save and Test" only checks for basic test cases, more rigorous cases will be used to judge your code while scoring. Additional score will be given for writing optimized code both in terms of memory and execution time.

You are given an integer array nums of size n and a positive integer k.Divide the array into one or more arrays of size 3 satisfying the following conditions:Each element of nums should be in exactly one array.The difference between any two elements in one array is less than or equal to k.Return a 2D array containing all the arrays. If it is impossible to satisfy the conditions, return an empty array. And if there are multiple answers, return any of them.

Given an array of elements. Find two elements in the array such that their sum is equal to the given element K.Input format :The first line of the input consists of the value of n.The second line of the input consists of the array of elements separated by space.The third line of the input consists of the sum.Output format :The output prints whether the array has a pair of elements with the given sum.Sample test cases :Input 1 :61 4 45 6 10 -816Output 1 :Array has two elements with given sum 16Input 2 :61 4 45 6 10 -860Output 2 :Array doesn't have two element