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Server Side Programming Articles
Page 1268 of 2109
Count pairs with given sum in C++
We are given an integer array and the task is to count the total number of pairs that can be formed using the given array values such that the sum of the pairs is equal to the given sum.Input − int arr[] = {2, 8, 1, 5, 11}, sum = 10Output − Count of pairs with given sum 13 is − 2Explanation −a1a2a1 + a22810213257211138198513811191561111251116Input − int arr[] = {2, 8, -1, 5, -11}, sum = 6Output − Count of pairs with given sum 6 is − 1Explanation −a1a2a1 + a228102-112572-11-98-1785138-11-31561-11-105-11-6Approach used in the below program is as followsInput an ...
Read MoreCount pairs with Odd XOR in C++
We are given an integer array and the task is to count the total number of pairs that can be formed using the given array values such that the XOR operation on the pairs will result in an ODD value.The truth table for XOR operation is given belowABA XOR B000101011110Input − int arr[] = {2, 8, 1, 5, 11}Output − Count of pairs with Odd XOR are − 6Explanation −a1a2a1 XOR a228102132572119819851381131541111051114Approach used in the below program is as followsInput an array of integer elements to form an pairCalculate the size of an array pass the data to the function ...
Read MoreCount of pairs (x, y) in an array such that x < y in C++
We are given an integer array and the task is to count the total number of pairs (x, y) that can be formed using the given array values such that the integer value of x is less than y.Input − int arr[] = { 2, 4, 3, 1 }Output − Count of pairs (x, y) in an array such that x < y are − 6Explanation −XYX < Y24true23true21false43false41false42false32false12true34true14true31false13falseApproach used in the below program is as followsInput an array of integer elements to form an pairCalculate the size of an array pass the data to the function for further processingCreate ...
Read MoreCount smaller numbers whose XOR with n produces greater value in C++
We are given an integer number let’s say, num and the task is to count the smaller numbers less than num whose XOR with num will result in a value greater than the XOR value..The truth table for XOR operation is given belowABA XOR B000101011110Input − int num = 11Output − Count of smaller numbers whose XOR with n produces greater value are − 4Explanation −We are given with the num as 11 which means we need to find XOR of num with the numbers less than num. So the numbers are 1 XOR 11 < 11(FALSE), 2 XOR 11 ...
Read MoreProgram to find count of numbers having odd number of divisors in given range in C++
In this tutorial, we will be discussing a program to find the count of numbers having odd number of divisors in a given range.For this we will be provided with the upper and lower limits of the range. Our task is to calculate and count the number of values having an odd number of divisors.Example#include using namespace std; //counting the number of values //with odd number of divisors int OddDivCount(int a, int b){ int res = 0; for (int i = a; i
Read MoreCount smaller values whose XOR with x is greater than x in C++
We are given an integer number let’s say, x and the task are to count the smaller numbers less than x whose XOR with x will result in a value greater than the XOR value.The truth table for XOR operation is given belowABA XOR B000101011110Input − int x = 11Output − Count of smaller values whose XOR with x is greater than x are − 4Explanation −We are given with the x as 11 which means we need to find XOR of x with the numbers less than x. So the numbers are 1 XOR 11 < 11(FALSE), 2 XOR ...
Read MoreProgram to find covariance in C++
In this tutorial, we will be discussing a program to find covariance.For this we will be provided with two sets of random variables. Our task is to calculate their covariance i.e, the measure of how much those two values differ together.Example#include using namespace std; //function to find mean float mean(float arr[], int n){ float sum = 0; for(int i = 0; i < n; i++) sum = sum + arr[i]; return sum / n; } //finding covariance float covariance(float arr1[], float arr2[], int n){ float sum = 0; for(int i = 0; i < ...
Read MoreMaximum circular subarray sum in C++
We are given an array and the task is to form the subarrays such that the sum of subarrays in a circular fashion will result in a maximum value.Input − int arr[] = {1, 2, 8, 4, 3, 0, 7}Output − Maximum circular subarray sum is − 22Explanation − we are given an array containing {1, 2, 8, 4, 3, 0, 7} and the subarray of it with maximum sum will be 7 + 1 + 2+ 8 + 4 is 22.Input − int arr[] = { 2, 5, -1, 6, 9, 4, -5 }Output − Maximum circular subarray sum ...
Read MoreCount rows/columns with sum equals to diagonal sum in C++
We are given a matrix which is a 2-D array having rows and columns and the task is to calculate the count of sum of all the rows and columns such that it is equal to the sum of either principal or secondary matrix.Input −int arr[row][col] = { { 4, 1, 7 }, { 10, 3, 5 }, { 2, 2, 11} }Output − Count of rows/columns with sum equals to diagonal sum are &mins; 2Explanation −sum of principal diagonal is: 4 + 3 + 11 = 18 and sum of secondary diagonal is: 7 + 3 ...
Read MoreProgram to find Cullen Number in C++
In this tutorial, we will be discussing a program to find Cullen Number.For this we will be provided with an integer. Our task is to find the cullen number at that position using the formula −2n* n + 1Example#include using namespace std; //finding the nth cullen number unsigned get_cullen(unsigned n){ return (1
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