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Articles on Trending Technologies
Technical articles with clear explanations and examples
Program to find minimum number of lectures to attend to maintain 75% in C++
In this problem, we are given two numbers M and N that denote the total number of classes held till present data and the number of classes attended by the student respectively. Our task is to create a program to find minimum number of lectures to attend to maintain 75% in C++.Problem DescriptionThis is one of the biggest concerns of college students to maintain 75% percent attendance. This program calculates the minimum number of lectures that are to be attended regularly by the student to get an attendance of 75%.Let’s take an example to understand the problem, Example 1Input: M ...
Read MoreProgram to find N-th term of series a, b, b, c, c, c...in C++
In this problem, we are given a number N. Our task is to create a Program to find N-th term of series a, b, b, c, c, c…in C++.Problem DescriptionTo find the Nth term of the series −a, b, b, c, c, c, d, d, d, d, ....Nterms We need to find the general term of the series.Let’s take an example to understand the problem, InputN = 7OutputdSolution ApproachTo find the general term of the series, we need to closely observe the series. The series has 1 a, 2 b’s, 3 c’s, 4 d’s, ... This seems to be an AP. ...
Read MoreProgram to find N-th term in the given series in C++
In this problem, we are given a number N. Our task is to create a program to find N-th term in the given series in C++.Problem DescriptionTo find the sum of the given series −1, 1, 2, 3, 4, 9, 8, 27, 16, 81, 32, 243, 64, 729, 128, 2187, 256, ... NTermsWe will find the general term of the series.Let’s take an example to understand the problem, Example 1InputN = 6Output9Example 2InputN = 13Output64Solution ApproachTo solve the problem, we need to carefully observe the series. As it is, a mixture series and these types of series are difficult to ...
Read MoreProgram to find Nth term divisible by a or b in C++
In this problem, we are given three numbers A, B, and N. Our task is to create a program to find Nth term divisible by A or B in C++.Problem DescriptionThe Nth Term divisible by A or B. Here, we will find the term n number term which is divisible by number A or B. For this, we will count till nth numbers that are divisible by A or B.Let’s take an example to understand the problem, InputA = 4, B = 3, N = 5Output9ExplanationThe terms the are divisible by 3 and 4 are −3, 4, 6, 8, 9, ...
Read MoreHow to find common elements between two Arrays using STL in C++?
In this tutorial, we will be discussing a program to understand how to find common elements between two arrays using STL in C++.To find the common elements between two given arrays we will be using the set_intersetion() method.Example#include using namespace std; int main(){ //defining the array int arr1[] = { 1, 45, 54, 71, 76, 12 }; int arr2[] = { 1, 7, 5, 4, 6, 12 }; int n1 = sizeof(arr1) / sizeof(arr1[0]); int n2 = sizeof(arr2) / sizeof(arr2[0]); sort(arr1, arr1 + n1); sort(arr2, arr2 + n2); cout
Read MoreInsertion sort using C++ STL
In this tutorial, we will be discussing a program to understand the insertion sort using C++ STL.In this we use std::upper_bound to find the element at the wrong position, then rotate the unsorted part of the array to make it sorted.Example#include //function to perform insertion sort void insertionSort(std::vector &vec){ for (auto it = vec.begin(); it != vec.end(); it++){ auto const insertion_point = std::upper_bound(vec.begin(), it, *it); std::rotate(insertion_point, it, it+1); } } //printing the array void print(std::vector vec){ for( int x : vec) std::cout
Read MoreProgram to find N-th term of series 0, 0, 2, 1, 4, 2, 6, 3, 8...in C++
In this problem, we are given a number N. Our task is to create a program to find N-th term of series 0, 0, 2, 1, 4, 2, 6, 3, 8…in C++.Problem descriptionTo find the Nth term of the given series−0, 0, 2, 1, 4, 2, 6, 3, 8 .... N TermsWe will find the general term of the series.Let’s take an example to understand the problem, InputN = 8Output3Solution ApproachTo find the general term of the series, we need to closely observe the series. This series is a bit difficult to recognize as it is a mixture of two ...
Read MoreProgram to find N-th term of series 0, 7, 8, 33, 51, 75, 102, 133...in C++
In this tutorial, we will be discussing a program to find N-th term of series 0, 7, 8, 33, 51, 75, 102, 133...For this, we will be provided with a number. Our task is to find the term for the given series at that particular position.Example#include #include using namespace std; //calculating nth term of series int nthTerm(int n) { return 2 * pow(n, 2) + n - 3; } int main() { int N = 4; cout
Read MoreCombination Sum II in C++
Suppose we have a set of candidate numbers (all elements are unique) and a target number. We have to find all unique combinations in candidates where the candidate numbers sum to the given target. The same number will not be chosen from candidates more than once. So if the elements are [2, 3, 6, 7, 8] and the target value is 8, then the possible output will be [[2, 6], [8]]Let us see the steps −We will solve this in recursive manner. The recursive function is named as solve(). This takes index, an array a, the integer b and another ...
Read MoreHow to find the sum of elements of a Vector using STL in C++?
In this tutorial, we will be discussing a program to understand how to find the sum of elements of a vector using STL in C++.To find the sum of elements of a given vector, we would be using the accumulate() method from the STL library.Example#include using namespace std; int main(){ //defining the vector vector a = { 1, 45, 54, 71, 76, 12 }; cout
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