Given a Rooted Tree with n node, labeled from 1 to n and tree is rooted at node 1. Parent of i-th node is p[i], i is starting from 2 as 1 is always root node. Let f(L) denotes the smallest connected subgraph that contains all leaves L. The task is to count the number of ways to… Read More »
The number system is basically a representation of numbers in different forms and with different operators. The origin of the number system was a long time ago by our ancestors. Earlier they use the barter system until they don’t get introduced to Number System. They discover the method of counting. They might be used their fingers for counting… Read More »
Given an integer array arr[], the task is to find the number of triplets at distinct indices that can be removed from the array such that the mean remains the same as before. Example: Input: arr[]= { 8, 7, 4, 6, 3, 0, 7} Output: 3 Explanation: The mean of the array is (8+7+4+6+2+1+7)/7 = 5 On removal… Read More »
Given a non negative number, you are required to find whether or not the number can be composed from sum of some number of 7s, 5s and 3s i.e. if a number is of the format n=3x+5y+7z (x, y, z being non negative integers), if not print -1. If it is of the required format, print the number… Read More »
Given a positive integer N, the task is to construct an array of length N and maximize the value at index K such that the sum of all the array elements is at most M and the absolute difference between any two consecutive array elements is at most 1. Examples: Input: N = 3, M = 7, K… Read More »
In this article, we will discuss about Hexahectagon number. According to definition of Hexahectagon number: A Hexahectagon number is class of figurate number. It has 600 – sided polygon called Hexahectagon. The N-th Hexahectagon number count’s the 600 number of dots and all others dots are surrounding with a common sharing corner and make a pattern. The first… Read More »
You can use it to select a smaller group (sample) from a larger population to study, in order to make conclusions about the entire population. There are two main types of sampling methods Probability Sampling and Non-Probability Sampling and each sampling has its own benefits and drawbacks. You can understand the importance and differences between probability and non probability sampling in this… Read More »
In this article, we will discuss some of similar questions that are easy to solve with few changes in solution codes. Leetcode is a platform to practice DSA problems for those who want to learn DSA and practice these online. You can practice those DSA problems and qualify the DSA round of many product based companies to become… Read More »
MAC Addresses and IP Addresses both identify devices on the Internet. The NIC card manufacturer provides MAC Address. Whereas, the Internet Service Provider provides the IP Address. The main difference between them is that MAC Address is used for physical location to identify it on a network. Whereas, IP Addresses is used to indentify device on the Internet… Read More »
1. Procedural Programming Procedural Programming is based on structured programming. It has procedures which are sequences of computational steps. These procedures can be called at various points during program execution. Languages used in Procedural Programming: BASIC, FORTRAN, Pascal, ALGOL, COBOL and C. 2. Object-Oriented Programming Object-oriented programming is based on objects. Objects have data (attributes) and code (methods).… Read More »
