C++ Programs - Hard Articles

How to create a custom String class in C++ with basic functionalities

In this article, we will create our custom string class which will have the same functionality as the existing string class.The string class has the… Read More

C-String-Question

cpp-string

strings

C++

C++ Programs

DSA

Strings

Generating RGBA portable graphic images through C++

PNG images are capable of supporting multiple image properties such as multiple colors, degree of transparency, Gamma correction, Lossless compression, etc. PNG images are widely… Read More

computer-graphics

C Language

C++

C++ Programs

Project

Write From Home

Number of steps to sort the array by changing order of three elements in each step

Given an array arr[] of size N consisting of unique elements in the range [0, N-1], the task is to find K which is the… Read More

Algorithms

Arrays

C++

C++ Programs

DSA

Mathematical

Sorting

Query to find the maximum and minimum weight between two nodes in the given tree using LCA.

Given a tree, and the weights of all the node. Each query contains two integers u and v, the task is to find the minimum… Read More

array-range-queries

LCA

LCA.array-range-queries

Advanced Data Structure

C++ Programs

Competitive Programming

DSA

Dynamic Programming

Recursion

Tree

Shortest subarray to be removed to make all Array elements unique

Given an array arr[] containing N elements, the task is to remove a subarray of minimum possible length from the given array such that all… Read More

frequency-counting

sliding-window

subarray

Algorithms

Arrays

C++ Programs

Divide and Conquer

DSA

Hash

Mathematical

Sort an array of strings based on the given order

Given an array of strings words[] and the sequential order of alphabets, our task is to sort the array according to the order given. Assume… Read More

Algorithms

Arrays

C++ Programs

DSA

Sorting

Strings

Missing occurrences of a number in an array such that maximum absolute difference of adjacent elements is minimum

Given an array arr[] of some positive integers and missing occurrence of a specific integer represented by -1, the task is to find that missing… Read More

Arrays

C++

C++ Programs

Competitive Programming

CS - Placements

DI - Placements

DSA

English - Placements

Greedy

Placements

QA - Placements

Reasoning - Placements

Sum of all N-digit palindromic numbers which doesn’t contains 0 and are divisible by 9

Given a number N, the task is to find the sum of all N-digit palindromic numbers which are divisible by 9 and the number doesn’t… Read More

C++ Programs

Competitive Programming

CS - Placements

DSA

Mathematical

Find the minimum dominating set of a Binary tree

Given a binary tree with N nodes numbered [1, N], the task is to find the size of the smallest Dominating set of that tree.… Read More

C++ Programs

Competitive Programming

Data Structures

DSA

Dynamic Programming

Recursion

Tree

Find the Kth pair in ordered list of all possible sorted pairs of the Array

Given an array arr[] containing N integers and a number K, the task is to find the K-th pair in the ordered list of all… Read More

Arrays

C++ Programs

Competitive Programming

DSA

Mathematical

Sorting

Solving Sudoku using Bitwise Algorithm

Given a partially filled 9×9 matrix, digits (from 1 to 9) must be assigned to the empty cells so that every row, column, and submatrix… Read More

Algorithms

Backtracking

C++

C++ Programs

C/C++ Puzzles

Computer Subject

DSA

Programming Language

Puzzles

Software Engineering

Write From Home

ML – Neural Network Implementation in C++ From Scratch

What are we going to do here? This article explains how to create a super-fast Artificial Neural Network that can crunch millions of data points within… Read More

C++ Programs

Machine Learning

Write From Home

Runtime Polymorphism in various types of Inheritance in C++

C++ allows users to use the concept of Run-Time Polymorphism using Virtual Functions for any type of Inheritance . Below is how to implement Run-Time… Read More

C++-Inheritance

C++-Virtual Functions

C++

C++ Programs

Minimum value of distance of farthest node in a Graph

Given an acyclic undirected graph having N nodes and N-1 edges in the form of a 2D array arr[][] in which every row consists of… Read More

DFS

Algorithms

C++

C++ Programs

Competitive Programming

DSA

Graph

Wheel Factorization Algorithm

Given a number N. The task is to check if the given number is Prime Number or not.Examples: Input: N = 987 Output: Not a Prime… Read More

Picked

Prime Number

Algorithms

C++ Programs

DSA

Mathematical

Two way communication between Client and Server using Win32 Threads

Prerequisite: Socket Programming in C/C++ It is possible to send data from the server and receive a response from the client. Similarly, the client can… Read More

Processes & Threads

Socket-programming

C++

C++ Programs

Computer Networks

Sum of all LCP of maximum length by selecting any two Strings at a time

Given a list of strings, the task is to find the sum of all LCP (Longest Common Prefix) of maximum length by selecting any two… Read More

Longest Common Prefix

Trie

Advanced Data Structure

C++

C++ Programs

DSA

Recursion

Strings

Print all possible combinations of words from Dictionary using Trie

Given an array of strings arr[], for every string in the array, print all possible combinations of strings that can be concatenated to make that… Read More

Technical Scripter 2019

Trie

Advanced Data Structure

Algorithms

Arrays

Backtracking

C++

C++ Programs

Computer Subject

DSA

Experienced

Experiences

Interview Experiences

Strings

Technical Scripter

Smallest number greater than n that can be represented as a sum of distinct power of k

Given a number n and a value k, the task is to find the smallest m(m>=n), such that m can be represented as a sum… Read More

Technical Scripter 2019

Arrays

C Language

C++

C++ Programs

C/C++ Puzzles

Competitive Programming

DSA

Mathematical

Pattern Searching

Searching

Technical Scripter

Maximize the number of palindromic Strings

Given N binary strings b1, b2, b3…. bn. The task is to find the maximum number of binary strings that you can make palindromic by… Read More

binary-string

palindrome

Algorithms

C++

C++ Programs

Competitive Programming

DSA

Greedy

Mathematical

Programming Language

Strings