Programming Articles - Page 2072 of 3363

In this article we are going to see a python program that will give output of possible words from a given set of characters. Here we are taking a list as an input which will contain the set of reference words and another list containing the characters from which the words are made up of.In the below program, we define two functions. One to take the letters from the second list and make up words. Another function to match the words formed with the words present in the given list of words.Example Live Demodef Possible_Words(character):    x = {}    for ... Read More

We can access the individual elements of a list using the [] brackets and the index number. But when we need to access some of the indices then we cannot apply this method. We need the below approaches to tackle this.Using two listsIn this method, along with the original list, we take the indices as another list. Then we use a for loop to iterate through the indices and supply those values to the main list for retrieving the values.Example Live Demogiven_list = ["Mon", "Tue", "Wed", "Thu", "Fri"] index_list = [1, 3, 4] # printing the lists print("Given list : ... Read More

In this tutorial, we will be discussing a program to understand thread functions in C/C++.Thread functions allow users to implement concurrent functions at the same time, which can either be dependent on each other for execution or independent.Example#include #include #include void* func(void* arg){    //detaching the current thread    pthread_detach(pthread_self());    printf("Inside the thread");    pthread_exit(NULL); } void fun(){    pthread_t ptid;    //creating a new thread    pthread_create(&ptid, NULL, &func, NULL);    printf("This line may be printed before thread terminates");    if(pthread_equal(ptid, pthread_self())       printf("Threads are equal");    else       printf("Threads are ... Read More

In this tutorial, we will be discussing a program to understand templates and static variables in C++.In case of function and class templates, each instance of the templates has its own local copy of the variables.Example Live Demo#include using namespace std; template void fun(const T& x){    static int i = 10;    cout

In this tutorial, we will be discussing a program to understand Template specialization in C++.Standard functions like sort() can be used with any data types and they behave the same with each of them. But if you want to set a special behaviour of the function for a particular data type (even user defined), we can use template specialization.Example Live Demo#include using namespace std; template void fun(T a) {    cout

In this tutorial, we will be discussing a program to understand swapping of subranges of different containers in C++.For this we will be provided with vectors and lists, and we need to swap some of their elements.Example Live Demo#include #include #include #include using namespace std; int main(){    vector v = { -10, -15, -30, 20, 500 };    list lt = { 10, 50, 30, 100, 50 };    swap_ranges(v.begin(), v.begin() + 3, lt.begin());    for (int n : v)       cout

In this tutorial, we will be discussing a program to understand how to sum two integers without using arithmetic operators in C/C++.For adding two integers without using arithmetic operators, we can do this with either using pointers or using bitwise operators.ExampleUsing pointers#include using namespace std; int sum(int a, int b){    int *p = &a;    return (int)&p[b]; } int main() {    int add = sum(2,3);    cout

In this tutorial, we will be discussing a program to understand how to store a Data triplet in a vector in C++.To store three elements in a single cell of a vector we will creating a user defined structure and then make a vector from that user defined structure.Example Live Demo#include using namespace std; struct Test{    int x, y, z; }; int main(){    //creating a vector of user defined structure    vector myvec;    //inserting values    myvec.push_back({2, 31, 102});    myvec.push_back({5, 23, 114});    myvec.push_back({9, 10, 158});    int s = myvec.size();    for (int i=0;i

The problem is to sort a vector in descending order using C++'s Standard Template Library(STL). Sorting in descending order means rearranging the elements of the vector so that the largest elements come first, followed by smaller elements, all the way down to the smallest element at the end of the vector. Let's say we have the following vector of integers: vector v = {4, 2, 9, 1, 7}; We want to sort this vector so that the elements are arranged in descending order: v = {9, 7, 4, 2, 1}; In this article, we will show you how ... Read More

Reversing a vector's elements is a common task in many programs, whether for sorting, displaying, or other reasons. C++ provides several ways to reverse a vector. Following is an example of creating a vector using C++. For the vector: V = {1, 2, 3, 4, 5} Reversed Output: {5, 4, 3, 2, 1} For the vector: V = {22, 23, 5, 6, 34} Reversed Output: {34, 6, 5, 23, 22} Approaches to Reverse a Vector We'll cover the following methods for reversing the element in the Vector. Using std::reverse Using a Simple Loop Using std::reverse_copy Using a ... Read More