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Flatten a binary tree into linked list | Set-3

Given a binary tree, flatten it into linked list in-place. Usage of auxiliary data structure is not allowed. After flattening, left of each node should… Read More

Binary Tree

Advanced Data Structure

DSA

Linked List

Number of pairs whose sum is a power of 2

Given an array arr[] of positive integers, the task is to count the maximum possible number of pairs (arr[i], arr[j]) such that arr[i] + arr[j]… Read More

Arrays

Bit Magic

C++ Programs

DSA

Hash

Sorting

LinkedList toArray() method in Java with Example

java.util.LinkedList.toArray() method is used to convert LinkedList into an Array. It returns the same LinkedList elements but in the form of Array only. We have… Read More

Picked

Java

Python | Finding strings with given substring in list

Method #1: Using list comprehension List comprehension is an elegant way to perform any particular task as it increases readability in the long run. This… Read More

Python list-programs

substring

Python

Python Programs

Difference of two columns in Pandas dataframe

Difference of two columns in pandas dataframe in Python is carried out by using following methods : Method #1 : Using ” -” operator. import… Read More

pandas-dataframe-program

Picked

Python pandas-dataFrame

Python-pandas

Technical Scripter 2018

Python

Technical Scripter

Python | Plotting Combined charts in excel sheet using XlsxWriter module

Prerequisite: Create and Write on an excel sheetXlsxWriter is a Python library using which one can perform multiple operations on excel files like creating, writing,… Read More

Python-excel

Technical Scripter 2018

Python

Technical Scripter

numpy.argwhere() in Python

numpy.argwhere() function is used to find the indices of array elements that are non-zero, grouped by element. Syntax : numpy.argwhere(arr) Parameters : arr : [array_like]… Read More

Python numpy-Sorting Searching

Python-numpy

Python

Python | Pandas DatetimeIndex.month

Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages… Read More

Python pandas-datetimeIndex

Python-pandas

Python

Stack size() method in Java with Example

The Java.util.Stack.size() method in Java is used to get the size of the Stack or the number of elements present in the Stack. Syntax: Stack.size()… Read More

Java - util package

Java-Collections

Java-Functions

Java-Stack

Java

LinkedHashSet toArray() method in Java with Example

The toArray() method of Java LinkedHashSet is used to form an array of the same elements as that of the LinkedHashSet. Basically, it copies all… Read More

Java - util package

Java-Collections

Java-Functions

java-LinkedHashSet

Java

HTML DOM querySelector() Method

The querySelector() method finds and returns the first HTML element that matches a specific CSS selector. If the selector is invalid, it throws an error.… Read More

HTML-DOM

Picked

HTML

Web Technologies

Stack set() method in Java with Example

The set() method of Java Stack is used to replace any particular element in the stack created using the Stack class with another element. This… Read More

Java - util package

Java-Collections

Java-Functions

Java-Stack

Java

[24]7 Innovation Labs Interview Experience (6 Months Experience)

Round 1:(Hackerrank Test) Q1: Binary tree mirror image check ( https://www.geeksforgeeks.org/check-if-two-trees-are-mirror/ ) Q2: Stack reversal in place // just the function ( https://www.geeksforgeeks.org/reverse-a-stack-using-recursion/) Q3: Kendanes… Read More

Experiences

Interview Experiences

Minimum steps to reach any of the boundary edges of a matrix | Set 1

Given an N X M matrix, where ai, j = 1 denotes the cell is not empty, ai, j = 0 denotes the cell is… Read More

Amazon

DSA

Dynamic Programming

Matrix

Java program to merge contents of all the files in a directory

Prerequisite : PrintWriter, BufferedReader. We are given a directory/folder in which n number of files are stored(We dont know the number of files) and we want… Read More

Java

Java Programs

Technical Scripter

Smallest subarray containing minimum and maximum values

Given an array A of size N. The task is to find the length of smallest subarray which contains both maximum and minimum values. Examples: … Read More

two-pointer-algorithm

Arrays

DSA

Sorting

TreeSet lower() method in Java

The lower(E ele) method of TreeSet class in Java is used to return the greatest element in this set which is strictly less than the… Read More

Java - util package

java-treeset

java-treeset-functions

Java

C# | Arrays of Strings

An array is a collection of the same type variable. Whereas a string is a sequence of Unicode characters or array of characters. Therefore arrays… Read More

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C#

Accolite Interview Experience (On-Campus)

Accolite visited our campus in November 2018. Round1: Accolite visited our campus in November 2018 at 6-8 lpa salary package. The first round was an… Read More

Experiences

Interview Experiences

LCM of N numbers modulo M

Given an array arr[] of integers, the task is to find the LCM of all the elements of the array modulo M where M =… Read More

GCD-LCM

Modular Arithmetic

Technical Scripter 2018

Competitive Programming

DSA

Mathematical

Technical Scripter