All Medium Articles

Area of squares formed by joining mid points repeatedly

Given a square having a side of length L. Another square form inside the first square by joining midpoint of the side of the first… Read More

Geometric Progression

series

Puzzles

Check if a large number can be divided into two or more segments of equal sum

Given a very large Number N. The task is to check if the number can be divided into two or more segments of an equal… Read More

ASCII

large-numbers

number-theory

prefix-sum

DSA

Strings

Longest Subarray with Sum greater than Equal to Zero

Given an array of N integers. The task is to find the maximum length subarray such that the sum of all its elements is greater… Read More

Binary Search

subarray

Technical Scripter 2018

Arrays

DSA

Technical Scripter

Maximum occurred integer in n ranges | Set-2

Given N ranges of L-R. The task is to print the number which occurs the maximum number of times in the given ranges. Note: 1… Read More

array-range-queries

prefix-sum

Arrays

DSA

Hash

Collections addAll() method in Java with Examples

The addAll() method of java.util.Collections class is used to add all of the specified elements to the specified collection. Elements to be added may be… Read More

Java-Collections

Java

CSS Units

CSS has several different units for expressing the length and measurement. CSS units are needed to specify the measurement in the stylesheet like padding:”5px“. Mainly… Read More

CSS-Basics

Picked

CSS

Web Technologies

Delete all the nodes from the list which are less than K

Given a Linked List and a key K. The task is to write a program to delete all the nodes from the list that are… Read More

Technical Scripter 2018

DSA

Linked List

Technical Scripter

Minimum Cost to make two Numeric Strings Identical

Given two numeric strings, A and B. A numeric string is a string that contains only digits [‘0’-‘9’].The task is to make both the strings… Read More

C++

DSA

Dynamic Programming

Misc

Iterative Merge Sort for Linked List

Given a singly linked list of integers, the task is to sort it using iterative merge sort. Recommended: Please solve it on “PRACTICE” first, before… Read More

Linked-List-Sorting

Merge Sort

DSA

Linked List

Strategies for Schema design in DBMS

There are various strategies that are considered while designing a schema. Most of these strategies follow an incremental approach that is, they must start with… Read More

DBMS

Arrays stream() method in Java

stream(T[] array) The stream(T[] array) method of Arrays class in Java, is used to get a Sequential Stream from the array passed as the parameter… Read More

Java

Balance a string after removing extra brackets

Given a string of characters with opening and closing brackets. The task is to remove extra brackets from string and balance it. Examples: Input: str… Read More

Constructive Algorithms

DSA

Strings

Sum of Factors of a Number using Prime Factorization

Given a number N. The task is to find the sum of all factors of the given number N. Examples: Input : N = 12… Read More

factor

prime-factor

sieve

DSA

Mathematical

C# | Multidimensional Indexers

Prerequisite: Indexers in C# The multi-dimensional indexer is almost similar to multidimensional arrays. For the efficient content-based retrieval of data, multidimensional indexers are used. To… Read More

CSharp-Indexers & Properties

C#

Design an online book reader system

Design an online book reader system (Object-Oriented Design). Asked In: Amazon, Microsoft, and many more interviews Solution: Let’s assume we want to design a basic… Read More

Object-Oriented-Design

Design Pattern

GBlog

System Design

Halting Problem in Theory of Computation

To understand better the halting problem, we must know Decidability, Undecidability and Turing machine, decision problems and also a theory named as Computability theory and… Read More

Picked

GATE CS

Theory of Computation

Java Program for Phone Mnemonics

In our daily lives, we have to remember a lot of phone numbers. Most people find it quite difficult to remember such huge 10-digit phone… Read More

Backtracking

DSA

Java Programs

Find Nth term (A matrix exponentiation example)

We are given a recursive function that describes Nth terms in the form of other terms. In this article, we have taken specific examples. Now… Read More

matrix-exponentiation

Competitive Programming

Divide and Conquer

DSA

Matrix

Recursion

Perfios Campus Placement Experience

Perfios had recently come to our college to recruit interns and full time employees for the role of Software Developers. We had to go to… Read More

Experiences

Interview Experiences

Minimum operation require to make first and last character same

Given a string S. You are allowed two types of operations: Remove a character from the front of the string.Remove a character from the end… Read More

cpp-vector

DSA

Strings