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Articles by Farhan Muhamed
Page 3 of 11
Find the Longest Common Substring using Binary search and Rolling Hash
In this article, we will explain the concept of rolling hash and find the longest common substring using binary search and rolling hash. We will also provide a C++ code implementation for the same. Rolling Hash of a String Problem Statement Algorithm to Find the Longest Common Substring C++ Code Implementation Time and Space Complexity Rolling Hash of a String Rolling hash is a cryptographic technique used to calculate the hash value of a string. In this, we ...
Read MoreFind the closest element in Binary Search Tree in C++
In this article, we will learn to solve a popular problem that involves finding the closest element in a binary search tree (BST) to a given target value. There are two methods to solve this problem: Brute Force Method (Inorder Traversal) Optimized Method (DFS Traversal) Before moving to the solution, let's understand the problem statement in detail. Find the Closest Element in Binary Search Tree Given a binary search tree (BST) and a target value K, the task is to find a node in BST, whose value is ...
Read MoreFind square root of number upto given precision using binary search in C++
In this article, we will learn how to find the square root of a number up to a given precision by using binary search algorithm and implement it in C++. Before dive into the concept, make sure that you have a basic understanding of binary search algorithm. Square Root of a Number Upto a Given Precision In this problem, you are given a positive floating point number N and a positive integer P. The task is to find the square root of N up to P decimal places using binary search. Scenario 1 Input: N = ...
Read MoreC++ code to find answers by vowel checking
In this article, we will explain a beginner level problem that involves finding answers for questions by checking for vowels in the question text. We will implement a C++ program that solves this problem. Let's break down the problem statement below. Find Answers by Vowel Checking Amal and Bimal are playing a game. Amal will ask any questions whose answers will be either "Yes" or "No". If the question’s last letter is a vowel, then Bimal will answer "Yes" otherwise "No". You are given a string containing the question that Amal asks. Your task is to determine the answer ...
Read MoreC++ code to find maximum fruit count to make compote
In this article, we will explain maximum fruit count to make compote problem and implement a C++ program to solve it. The problem involves finding the maximum number of fruits that can be used to make a compote, given certain constraints. Let's break down the problem statement below. Maximum Fruit Count to Make Compote You are given a list of fruits, say a apples, b bananas, and c cherries, where a, b, and c are the counts of each type of fruit. Your task is to make a compote using these fruits such that the apples, bananas and cherries ...
Read MoreC++ Program to Find Path Between Two Nodes in a Graph
In this article, we will learn how to find a path between two nodes in an undirected graph and implement it in C++. We will represent graph as an adjacency list and use a depth-first search (DFS) algorithm to find the path. We already discussed finding a path between two nodes in a directed graph, check here. Finding Path Between Two Nodes in an Undirected Graph We have an adjacency list representation of an undirected graph adj[] and two nodes src and dest, our task is to write a program that finds the path between the src ...
Read MoreC++ code to decrease even numbers in an array
An array is a group of similar elements stored together in a single variable which take contiguous memory locations. Arrays help us to store and manage multiple values of the same type, like a list of numbers or names.In this article, we will solve a beginner level problem in C++ that involves decreasing all the even numbers in an array by 1. Program to Decrease Even Numbers in an Array How to Check a if Number is Even in C++? C++ Program to Decrease Even Numbers ...
Read MoreFind if there is a path between two vertices in a directed graph
A directed graph is a graph where the edges specify a direction from one vertex to another. In this article, we will learn how to find a path between two vertices in a directed graph and implement C++ code to achieve this. To determine if there is a path between two vertices, there are two common algorithms we can use: BFS Algorithm to Find Path Between Two Vertices DFS Algorithm to Find Path Between Two Vertices First of all, let's understand what does it meant by having a ...
Read MoreArray Transformation in C++
Array transformation is a popular coding question asked in technical assessments and interviews. In this article, we will discuss the problem of array transformation with example testcases, the algorithm to solve it, and provide a C/C++ implementation. Array Transformation Based on Local Maxima and Minima In this problem, you are given an array of integers arr[] of size N. Every day the array undergoes a transformation which can be defined as follows: The first and last elements of the array are not transformed. For every other element arr[i] in the array, where 0 < i < N-1, ...
Read MoreC++ Array of Strings
A string is a sequence of characters used to store information as text. In C++, strings are represented as array of characters using the std::string class. In this article, we will learn what is an array of strings in C++, how to declare and initialize it, and how to access its elements. C++ Array of Strings Array of strings refer to an array where each element is a string. Just like a normal array, we can define an array of strings by specifying the data type as std::string and the size of the array inside square brackets. To initialize ...
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