All Hard Articles

How to add ViewFlipper in android?

This article is about the implementation of ViewFipper in android. It is an extension of the ViewAnimator class which helps to animate between views added… Read More

Android-View

Android

android 1

Java

Object Detection with Detection Transformer (DETR) by Facebook

Facebook has just released its State of the art object detection Model on 27 May 2020. They are calling it DERT stands for Detection Transformer… Read More

Image-Processing

Articles

Geek on the Top

Machine Learning

Python

Minimum flips required in a binary string such that all K-size substring contains 1

Given a binary string str of size N and a positive integer K, the task is to find the minimum number of flips required to… Read More

binary-string

sliding-window

substring

Algorithms

Bit Magic

DSA

Searching

Strings

Introduction of MariaDB

MariaDB is one of the most popular open-source relational database management system and could be used as a great replacement of MySQL. It is developed… Read More

mysql

DBMS

Technical Scripter

Count number of ways to convert string S to T by performing K cyclic shifts

Given two strings S and T and a number K, the task is to count the number of ways to convert string S to string… Read More

Algorithms-Recursion

Algorithms

Arrays

Competitive Programming

DSA

Dynamic Programming

Strings

Find the missing number in unordered Arithmetic Progression

Given an unsorted array arr[] of N integers that are in Arithmetic Progression, the task is to print the missing element from the given series.… Read More

arithmetic progression

Arrays

Binary Search

Bitwise-XOR

Arrays

C++

C++ Programs

Competitive Programming

DSA

Geometric

Greedy

Mathematical

Searching

Sorting

Largest substring where all characters appear at least K times | Set 2

Given a string str and an integer K, the task is to find the length of the longest sub-string S such that every character in… Read More

frequency-counting

Hash

strings

substring

Algorithms

Analysis of Algorithms

Arrays

C++ Programs

Divide and Conquer

DSA

Hash

Python

Recursion

Searching

Strings

Glowing Cube loader using HTML & CSS

Glowing cube loader can be created using HTML and CSS. We’ll use HTML to create the structure and some CSS properties. The loader is the… Read More

CSS-Properties

Web Technologies

Web Templates

Write From Home

HTTP headers | Referrer-Policy

The Referrer Policy HTTP header sets the parameter for amount of information sent along with Referrer Header while making a request. Referrer policy is used… Read More

HTTP-headers

Picked

Web Technologies

HTTP headers | Content-Security-Policy

The Content Security Policy response header field is a tool to implement defense in depth mechanism for protection of data from content injection vulnerabilities such… Read More

HTTP-headers

Picked

Web Technologies

React Material-UI Introduction and Installation

Material UI is the most powerful and efficient React UI Framework to build an Application by adding Designs and Animations and using it with technical… Read More

Material-UI

ReactJS

Web Technologies

Maximum sum possible for every node by including it in a segment of N-Ary Tree

Given an N-Ary tree containing N nodes and an array weight [ ] that denotes the weight of the nodes which can be positive or… Read More

DFS

n-ary-tree

Algorithms

Competitive Programming

DSA

Dynamic Programming

Tree

Minimum number of reversals to reach node 0 from every other node

Given a Directed Graph with N vertices value from 0 to N – 1 and N – 1 Edges, the task is to count the… Read More

BFS

Algorithms

DSA

Graph

Searching

Count of node sequences of length K consisting of at least one black edge

Given a tree consisting of N nodes numbered from [1, N] and is colored either black(denoted by 1) or green(denoted by 0), the task is… Read More

DFS

Competitive Programming

DSA

Graph

Design a DFA that accepts a string containing 3 a’s and 3 b’s

Problem Statement: Design a Definite Finite Automata for accepting the permutation of Three a’s and Three b’s over the input {a, b} Input: S =… Read More

DFA

permutation

Algorithms

DSA

Strings

Theory of Computation

Lexicographically largest string possible in one swap

Given string str of length N, the task is to obtain the lexicographically largest string by at most one swap. Note: The swapping characters might… Read More

lexicographic-ordering

Swap-Program

Competitive Programming

DSA

Greedy

Sorting

Strings

Smallest subsequence with sum of absolute difference of consecutive elements maximized

Given an array arr[] of length N, containing values in the range [1, N], the task is to find a subsequence s1, s2, …, sk… Read More

subsequence

Arrays

Competitive Programming

DSA

Greedy

Mathematical

Split a given array into K subarrays minimizing the difference between their maximum and minimum

Given a sorted array arr[] of N integers and an integer K, the task is to split the array into K subarrays such that the… Read More

subarray

Analysis of Algorithms

Arrays

Competitive Programming

Divide and Conquer

DSA

Dynamic Programming

Greedy

Mathematical

Sorting

Sum of absolute difference of all pairs raised to power K

Given an array arr[] of N integers and a number K, the task is to find the sum of absolute difference of all pairs raised… Read More

maths-power

Algorithms

Arrays

Competitive Programming

DSA

Dynamic Programming

Mathematical

Write From Home

Count of elements not divisible by any other elements of Array

Given an array arr[], the task is to determine the number of elements of the array which are not divisible by any other element in… Read More

cpp-map

divisibility

frequency-counting

Arrays

C++ Programs

DSA

Hash

JavaScript

Mathematical