All Hard Articles
Separation of Mixtures
Separation of Mixtures or method of separation is the process of separating or extracting different components of a mixture using some physical methods. The type… Read More
Chemistry-Class-9
Picked
Class 9
School Chemistry
School Learning
When to use each Sorting Algorithms | Set 2
Sorting is the process of arranging a set of data in a specific order, which may be numerical (ascending, descending) or lexicographical (alphabetical) order. Why… Read More
Data Structures
DSA
Sorting
Search a string in the dictionary with a given prefix and suffix for Q queries
Given an array arr[] consisting of N strings and Q queries in form of two strings prefix and suffix, the task for each query is… Read More
prefix
Suffix
Trie
Advanced Data Structure
DSA
Strings
Tree
How to Use the Smudge Tool in Photoshop?
Adobe Photoshop is a raster-based image editing software. It is developed by Adobe.Inc and available for both macOS and Windows operating systems. You can use… Read More
Picked
Class 7
School Learning
School Programming
GUI Billing System and Menu Card Using Python
So imagine that we’re starting a new restaurant or being appointed as one of the employees in a restaurant company, and we find out that… Read More
Python Tkinter-projects
Python-projects
Python-tkinter
Python
Maximum houses that can be painted continuously when the painting duration and date limit is given
Given an array arr[][] consisting of N pairs such that each pair {L, R} represents that ith house can be painted in L number of… Read More
Arrays
DSA
Greedy
Mathematical
Sorting
Find Array obtained after adding terms of AP for Q queries
Given an array A[] consisting of N integers and Q queries, say Query[][] of the form {L, R, a, d} such that each query represents… Read More
Arithmetic Progressions
array-range-queries
Arrays
DSA
Mathematical
Find all possible GCDs of every subsequences of given Array
Given an array arr[] consisting of N positive integers, the task is to find all the possible distinct Greatest Common Divisors(GCDs) among all the non-empty… Read More
GCD-LCM
HCF
subsequence
Arrays
DSA
Count of subsets whose product is multiple of unique primes
Given an array arr[] of size N,  the task is to count the number of non-empty subsets whose product is equal to P1×P2×P3×……..×Pk  where P1,… Read More
Prime Number
prime-factor
subset
Arrays
DSA
Greedy
Recursion
Longest subsequence with non negative prefix sum at each position
Given an array arr[] consisting of N integers, the task is to find the longest subsequence such that the prefix sum at each position of… Read More
prefix
prefix-sum
subsequence
Arrays
DSA
Dynamic Programming
Mathematical
Minimum cost to complete given tasks if cost of 1, 7 and 30 days are given
Given a sorted array arr[] consisting of N positive integers such that arr[i] represent the days in which a worker will work and an array… Read More
Arrays
DSA
Dynamic Programming
Greedy
Mathematical
Find the minimum range size that contains the given element for Q queries
Given an array Intervals[] consisting of N pairs of integers where each pair is denoting the value range [L, R]. Also, given an integer array… Read More
array-range-queries
priority-queue
Arrays
DSA
Heap
Queue
How to Change an Android App’s Name?
Whenever you make a project in Android studios you give a project name, your app’s name is derived from that. Consider after working on your… Read More
Android
Minimum days to make Array elements with value at least K sum at least X
Given two integers X, K, and two arrays arr[] and R[] both consisting of N positive integers where R[i] denotes the amount by which arr[i]… Read More
Binary Search
Arrays
Divide and Conquer
DSA
Mathematical
Searching
Count of indices pairs such that product of elements at these indices is equal to absolute difference of indices
Given an array arr[] consisting of N positive integers, the task is to find the number of pairs (i, j) such that i < j… Read More
Arrays
DSA
Mathematical
Searching
Total count of sorted numbers upto N digits in range [L, R] (Magnificent necklace combinatorics problem)
Given three integers N, L, and R, the task is to print the total count of ways to form a necklace of at most N… Read More
digit-DP
Permutation and Combination
Combinatorial
DSA
Dynamic Programming
Mathematical
Misc
Swiggy Interview Experience for SDE-II
I applied on LinkedIn for Swiggy SDE-II (R&G). Got the first round link – Hackerrank after 9-10 days. Round 1(Online Coding): HackerRank 3 Questions were… Read More
Marketing
Swiggy
Competitive Programming
DSA
Experiences
Interview Experiences
ThoughtWorks Interview Experience for Application Developer | 2+ Years Experienced
I applied through LinkedIn for Application Developer-Consultant. Got a call from HR  almost after 2-3weeks, the HR took the details like expected CTC and relevant… Read More
Marketing
Thoughtworks
Experienced
Experiences
Interview Experiences
Zoho Interview Experience for Software Developer 2021
Hi All,   I would like to contribute my interview experience with Zoho in June 2021 for Software Developer role here.   First of all,… Read More
Marketing
Zoho
Experiences
Interview Experiences
Solving Cryptarithmetic Puzzles | Set 2
Given an array of strings, arr[] of size N and a string S, the task is to find if it is possible to map integers… Read More
Backtracking
DSA
Hash
Recursion
Strings
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