All Easy Articles

HCF of array of fractions (or rational numbers)

Given a fraction series. Find the H.C.F of a given fraction series. Examples: Input : [{2, 5}, {8, 9}, {16, 81}, {10, 27}] Output :… Read More

GCD-LCM

Arrays

DSA

Mathematical

MySQL | Regular expressions (Regexp)

MySQL supports another type of pattern matching operation based on the regular expressions and the REGEXP operator. It provide a powerful and flexible pattern match… Read More

mysql

DBMS

SQL

Print Binary Tree levels in sorted order | Set 2 (Using set)

Given a tree, print the level order traversal in sorted order. Examples : Input : 7 / \ 6 5 / \ / \ 4… Read More

cpp-set

priority-queue

tree-level-order

DSA

Misc

Queue

Sorting

Tree

Adding one to number represented as array of digits

Given a non-negative number represented as an array of digits, add 1 to the number ( increment the number represented by the digits ). The… Read More

Basic Coding Problems

cpp-vector

DSA

Internationalization(I18N) in Java

Internationalization(I18N) is the process of designing web applications in such a way that which provides support for various countries, various languages, and various currencies automatically… Read More

Java

Piping in Unix or Linux

A pipe is a form of redirection (transfer of standard output to some other destination) that is used in Linux and other Unix-like operating systems… Read More

linux-command

Linux-Unix

Misc

Convert a sentence into its equivalent mobile numeric keypad sequence

Given a sentence in the form of a string, convert it into its equivalent mobile numeric keypad sequence. Examples : Input: GEEKSFORGEEKSOutput: 4333355777733366677743333557777Explanation: For obtaining… Read More

DSA

Hash

Strings

Replacing strings with numbers in Python for Data Analysis

Sometimes we need to convert string values in a pandas dataframe to a unique integer so that the algorithms can perform better. So we assign… Read More

Python

JavaScript String trim() Method

The JavaScript trim() method removes whitespace from both ends of a string and returns the trimmed string. The whitespace includes spaces, tabs, and newlines. This… Read More

JavaScript-Methods

javascript-string

JavaScript

Web Technologies

Sum of Series (n^2-1^2) + 2(n^2-2^2) +….n(n^2-n^2)

Program for finding the sum of the nth term of the series (n^2-1^2) + 2(n^2-2^2) + 3(n^2-3^2) + ….n(n^2-n^2) Examples: Input : 2 Output :3… Read More

series

series-sum

DSA

Mathematical

Check if a number is sandwiched between primes

A number is said to be sandwiched between primes if the number just after it and the number just before are Prime numbers. So, a… Read More

Prime Number

DSA

Mathematical

Why only subtraction of addresses allowed and not division/addition/multiplication

Why Subtraction is allowed? Two addresses can be subtracted because the memory between the two addresses will be valid memory. Let’s assume memory Ptr_1 and ptr_2… Read More

C-Pointers

C Language

Misc

Check if binary string multiple of 3 using DFA

Given a string of binary characters, check if it is multiple of 3 or not.Examples : Input : 1 0 1 0 Output : NO… Read More

divisibility

Bit Magic

DSA

Swap every two bits in bytes

Swap all the pair of bits in a byte. Before swapping: 11-10-11-01 After swapping: 11-01-11-10Examples: Input : 00000010 Output : 00000001 Input : 00000100 Output… Read More

Cisco

Bit Magic

DSA

Misc

Data Structures and Algorithms | Set 37

Que – 1. For 8 keys and 6 slots in a hashing table with uniform hashing and chaining, what is the expected number of items… Read More

GATE-CS-DS-&-Algo

Data Structures

DSA

GATE CS

MCQ

Misc

Data Structures and Algorithms | Set 36

Que – 1. The function shiftNode() which takes as input two linked lists- destination and source. It deletes front node from source and places it… Read More

GATE-CS-DS-&-Algo

Data Structures

DSA

GATE CS

MCQ

Misc

Check if a number is divisible by 8 using bitwise operators

Given a number n, check if it is divisible by 8 using bitwise operators. Examples: Input : 16 Output :YES Input :15 Output :NO Recommended… Read More

divisibility

Bit Magic

DSA

Mathematical

array::max_size() in C++ STL

Array classes are generally more efficient, light-weight and reliable than C-style arrays. The introduction of array class from C++11 has offered a better alternative for… Read More

cpp-array

STL

C++

Priority Queue using Linked List

Implement Priority Queue using Linked Lists. push(): This function is used to insert a new data into the queue. pop(): This function removes the element… Read More

priority-queue

DSA

Linked List

Queue

How to Find a File in Linux | Find Command

Linux, renowned for its robust command-line interface, provides a suite of powerful tools for efficient file and directory management. Among these, the “find” command stands… Read More

linux-command

Linux-file-commands

Linux-Unix