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Programming Articles
Page 2406 of 2547
C++ Program to implement standard error of mean
In this tutorial, we will be discussing a program to implement standard error of mean.Standard error of mean is the estimation of sample mean dispersion from population mean. Then it is used to estimate the approximate confidence intervals for the mean.Example#include using namespace std; //calculating sample mean float calc_mean(float arr[], int n){ float sum = 0; for (int i = 0; i < n; i++) sum = sum + arr[i]; return sum / n; } //calculating standard deviation float calc_deviation(float arr[], int n){ float sum = 0; for (int i = ...
Read MoreC++ program to implement Simpson's 3/8 rule
In this tutorial, we will be discussing a program to implement SImpson’s ⅜ rule.Simpson’s ⅜ rule is used for doing numerical integrations. The most common use case of this method is in performing numerical approximations of definite integrals.In this, the parabolas on the graph are used for performing the approximations.Example#include using namespace std; //function that is to be integrated float func_inte( float x){ return (1 / ( 1 + x * x )); } //calculating the approximations float func_calculate(float lower_limit, float upper_limit, int interval_limit ){ float value; float interval_size = (upper_limit - lower_limit) / interval_limit; float ...
Read MoreC++ Program to implement Linear Extrapolation
In this tutorial, we will be discussing a program to implement Linear Extrapolation.Extrapolation is defined as a process in which the required value for a certain function is beyond the lower or the upper limits of the function definition.In the case of Linear Extrapolation, the value beyond the scope is found using the tangent made on the graph of the function to determine the required value. Linear Extrapolation gives quite accurate results when applied.Example#include using namespace std; //structuring the values of x and y struct Data { double x, y; }; //calculating the linear extrapolation double calc_extrapolate(Data d[], ...
Read MoreC++ program to implement Inverse Interpolation using Lagrange Formula
In this tutorial, we will be discussing a program to implement Inverse Interpolation using Lagrange formula.Inverse Interpolation is defined as the method of finding the value of an independent variable from the given value of dependent value lying between two tabulated set of values for an unknown function.Example#include using namespace std; //structuring the values of x and y struct Data { double x, y; }; //calculating inverse interpolation double calc_invinter(Data d[], int n, double y){ double x = 0; int i, j; for (i = 0; i < n; i++) { double ...
Read MoreC++ program to implement Collatz Conjecture
In this tutorial, we will be discussing a program to implement Collatz Conjecture.For this, we will be given with a number n and we have to find out whether it can be converted to 1 using two operations −If n is even, n is converted to n/2.If n is odd, n is converted to 3*n + 1.Example#include using namespace std; //checking if n reaches to 1 or not bool check1(int n, unordered_set &s){ if (n == 1) return true; if (s.find(n) != s.end()) return false; return (n % 2)? check1(3*n + ...
Read MoreC++ program to get the Sum of series: 1 – x^2/2! + x^4/4! -.... upto nth term
In this tutorial, we will be discussing a program to get the sum of series 1 – x^2/2! + x^4/4! … upto nth term.For this we will be given with the values of x and n. Our task will be to calculate the sum of the given series upto the given n terms. This can be easily done by computing the factorial and using the standard power function to calculate powers.Example#include #include //calculating the sum of series double calc_sum(double x, int n){ double sum = 1, term = 1, fct, j, y = 2, m; int ...
Read MoreC++ program to generate random alphabets
In this tutorial, we will be discussing a program to generate random alphabets.For this, we will have a fixed size of array/string and use the rand() function to generate a random string of alphabets.Example#include using namespace std; const int MAX = 26; //generating a string of random alphabets string gen_random(int n){ char alphabet[MAX] = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' }; string res ...
Read MoreC++ program to generate CAPTCHA and verify user
In this tutorial, we will be discussing a program to generate CAPTCHA and verify user.For this, we will provide the user with a random string and ask him to reenter the same string. Then it has to be checked if the given and the input string matches.The CAPTCHA should be completely random system generated consisting of a-z, AZ and 0-9.Example#include using namespace std; //checks if the strings are same bool check_string(string &captcha, string &user_captcha){ return captcha.compare(user_captcha) == 0; } //generates a random string as Captcha string gen_captcha(int n){ time_t t; srand((unsigned)time(&t)); char *chrs = "abcdefghijklmnopqrstuvwxyzABCDEFGHI" "JKLMNOPQRSTUVWXYZ0123456789"; ...
Read MoreWhat is the data type of a lambda expression in Java?
The lambda expressions have a very simple, precise syntax and provide flexibility to specify the datatypes for the function parameters. Its return type is a parameter -> expression body to understand the syntax, we can divide it into three parts.Parameters : These are function method parameters and match with the signature of a function defined in the functional interface. Defining the data-type of parameters is optional but the number of parameters can match with the defined signatures in the interface.Expression Body : This is either a single statement or collection of statements that represent the function definition. Defining the data-type ...
Read MoreRemove vowels from a String in C++
The following C++ program illustrates how to remove the vowels (a, e, i, u, o) from a given string. In this context, we create a new string and process input string character by character, and if a vowel is found it is excluded in the new string, otherwise the character is added to the new string after the string ends we copy the new string into the original string. The algorithm is as follows;AlgorithmSTART Step-1: Input the string Step-3: Check vowel presence, if found return TRUE Step-4: Copy it to another array Step-5: Increment the counter ...
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