All Hard Articles

Count palindromic characteristics of a String

Given a string s of length n, count the number of substrings having different types of palindromic characteristics. Palindromic Characteristic is the number of k-palindromes in… Read More

DSA

Strings

ISRO | ISRO CS 2013 | Question 18

How many check bits are required for 16 bit data word to detect 2 bit errors and single bit correction using hamming code? (A) 5… Read More

ISRO

ISRO | ISRO CS 2013 | Question 7

Consider the following pseudocode: x : integer := 1 y : integer := 2 procedure add x := x + y procedure second (P: procedure)… Read More

ISRO

Pairs involved in Balanced Parentheses

Given a string of brackets, the task is to find the number of pairs of brackets involved in a balanced sequence in a given range.… Read More

Parentheses-Problems

Segment-Tree

Competitive Programming

Computer Subject

DSA

Tree

ISRO | ISRO CS 2013 | Question 6

Which of the following productions eliminate left recursion in the productions given below: S → Aa | b A → Ac | Sd | ε… Read More

ISRO

UGC-NET | UGC NET CS 2016 July – II | Question 26

A multiplexer combines four 100-Kbps channels using a time slot of 2 bits. What is the bit rate? (A) 100 Kbps (B) 200 Kbps (C)… Read More

UGC-NET

Possible two sets from first N natural numbers difference of sums as D

Given N and D, find if it is possible to make two sets from first N natural numbers such that the difference between the sum… Read More

Arrays

DSA

Mathematical

Number of ordered points pair satisfying line equation

Given an array of n integers, slope of a line i. e., m and the intercept of the line i.e c, Count the number of… Read More

cpp-math

cpp-unordered_map

C++ Programs

DSA

Geometric

Hash

Technical Scripter

Count pairs in an array which have at least one digit common

Given an array of N numbers. Find out the number of pairs i and j such that i < j and Ai and Aj have… Read More

cpp-unordered_map

Arrays

Bit Magic

DSA

Technical Scripter

Root Bridge Election in Spanning Tree Protocol

Redundant links are used to provide a backup path when one link goes down but a Redundant link can sometimes cause switching loops. The main… Read More

Computer Networks

Assembly language program to find largest number in an array

Problem – Determine largest number in an array of n elements. Value of n is stored at address 2050 and array starts from address 2051.… Read More

microprocessor

system-programming

Arrays

Computer Organization & Architecture

DSA

Introduction to SQLite

SQLite – Introduction SQLite is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. It is a popular choice as an… Read More

SQL

Technical Scripter

Median of two Sorted Arrays of Different Sizes using Binary Search

Given two sorted arrays, a[] and b[] os size n and m, the task is to find the median of these sorted arrays, in O(log(min(n,… Read More

Arrays

DSA

Subsets having Sum between A and B

Given a set of N integers. Find how many subsets of given array have sum between A and B(inclusive). Constraints: 1 ? N ? 34, -2… Read More

Binary Search

cpp-vector

meet-in-the-middle

Arrays

DSA

Technical Scripter

Check if bitwise AND of any subset is power of two

Given an array arr[] of n positive integers. The task is to check if there exist any subset of the array whose bitwise AND is… Read More

Arrays

Bit Magic

DSA

Tracxn Interview Experience | Set 2

Content Removed

Experiences

Interview Experiences

Microsoft Office India Interview experience | Set 170 (2 Years Exp)

Round 1: Validate an infix arithmetic expression string (braces and brackets are similar to parentheses): (1+2)*{[90*3]-[67+8-9]} Proposed Ans: Djikstra’s Shunting yard Interviewer’s Ans: Parser Tree… Read More

Experiences

Interview Experiences

UGC-NET | UGC NET CS 2016 Aug – III | Question 14

Consider a N-bit plane frame buffer with W-bit wide lookup table with W > N. How many intensity levels are available at a time ?… Read More

UGC-NET

ISRO | ISRO CS 2014 | Question 32

Write the output of the following C program #include <stdio.h> int main (void) { int shifty; shifty = 0570; shifty = shifty >>4; shifty =… Read More

ISRO

expandtabs() method in Python

Python String expandtabs() Method specifies the amount of space to be substituted with the “\t” symbol in the string. Python String expandtabs() Method Syntax Syntax… Read More

Python-Built-in-functions

Python-Functions

python-string

Python