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IntStream iterator() in Java

IntStream iterator() returns an iterator for the elements of this stream. It is a terminal operation i.e, it may traverse the stream to produce a… Read More

Java - util package

java-intstream

java-stream

Java

Misc

Why Is There a system32 Folder in a 64-bit Operating System?

Reason: To Ensure Backward Compatibility What is Backward Compatibility? Backward compatibility is a term used to describe software or hardware that is compatible with previous… Read More

Operating Systems Questions

Rank of an element in a stream

Given a stream of integers, look up the rank of a given integer x. The rank of an integer in-stream is “Total number of elements… Read More

Arrays

Binary Search Tree

DSA

Misc

Find the winner in nim-game

You are given an array A[] of n-elements. There are two players Alice and Bob. A Player can choose any of element from array and… Read More

Bitwise-XOR

Bit Magic

DSA

Game Theory

Fill 8 numbers in grid with given conditions

Place the numbers 1, 2, 3, 4, 5, 6, 7, 8 into the eight circles in the figure given below, in such a way that… Read More

programming-puzzle

Backtracking

DSA

Sequence vs Associative containers in C++

Sequence Containers In standard template library they refer to the group of container class template, we use to them store data. One common property as… Read More

STL

C++

Difference Between

Technical Scripter

Coordinates of rectangle with given points lie inside

Given two arrays X[] and Y[] with n-elements, where (Xi, Yi) represent a point on coordinate system, find the smallest rectangle such that all points… Read More

Basic Coding Problems

square-rectangle

DSA

Geometric

Convert Stream to Set in Java

Below given are some methods which can be used to convert Stream to Set in Java. Method 1 : Using Collectors Stream collect() method takes… Read More

Java - util package

Java-Collections

java-hashset

java-set

Java-Set-Programs

java-stream

Java-Stream-programs

Java

Misc

Insert in sorted and non-overlapping interval array

Given a set of non-overlapping intervals and a new interval, insert the interval at correct position. If the insertion results in overlapping intervals, then merge… Read More

cpp-vector

Arrays

DSA

Check if the given two numbers are friendly pair or not

Given two positive integer N, M. The task is to check if N and M are friendly pair or not. In number theory, friendly pairs… Read More

divisors

GCD-LCM

number-theory

DSA

Mathematical

Check if any valid sequence is divisible by M

Given an array of N integers, using ‘+’ and ‘-‘ between the elements check if there is a way to form a sequence of numbers… Read More

divisibility

Modular Arithmetic

Arrays

DSA

Dynamic Programming

Technical Scripter

Number of subarrays with given product

Given an array of positive numbers and a number k, find the number of subarrays having product exactly equal to k. We may assume that… Read More

sliding-window

Arrays

DSA

Power Set in Lexicographic order

This article is about generating Power set in lexicographical order. Examples : Input : abcOutput : a ab abc ac b bc c The idea… Read More

Backtracking

DSA

Recursion

Strings

Sum of list with stream filter in Java

We generally iterate through the list when adding integers in a range, but java.util.stream.Stream has a sum() method that when used with filter() gives the… Read More

Java-ArrayList

java-list

Java-List-Programs

java-stream

Java-Stream-programs

Java

Maximum height of Tree when any Node can be considered as Root

Given a tree with N nodes and N-1 edges, find out the maximum height of the tree when any node in the tree is considered… Read More

Advanced Data Structure

Algorithms

DSA

Dynamic Programming

Tree

Number of jump required of given length to reach a point of form (d, 0) from origin in 2D plane

Given three positive integers a, b and d. You are currently at origin (0, 0) on infinite 2D coordinate plane. You are allowed to jump… Read More

DSA

Geometric

UGC-NET | UGC-NET CS 2017 Nov – III | Question 32

You are given a sequence of n elements to sort. The input sequence consists of n/k subsequences,each containing k elements. The elements in a given… Read More

UGC-NET

UGC-NET | UGC-NET CS 2017 Nov – III | Question 7

Consider the following four schedules due to three transactions (indicated by the subscript) using read and write on a data item X, denoted by r(X)… Read More

UGC-NET

Golomb sequence

In mathematics, the Golomb sequence is a non-decreasing integer sequence where n-th term is equal to number of times n appears in the sequence.The first… Read More

series

DSA

Dynamic Programming

DFA in LEX code which accepts even number of zeros and even number of ones

Lex is a computer program that generates lexical analyzers, which is commonly used with the YACC parser generator. Lex, originally written by Mike Lesk and… Read More

Lex program

Misc

Theory of Computation