All Hard Articles
Mathematics | Renewal processes in probability
A Renewal process is a general case of Poisson Process in which the inter-arrival time of the process or the time between failures does not… Read More
Engineering Mathematics
Misc
Python | Tensorflow nn.sigmoid()
Tensorflow is an open-source machine learning library developed by Google. One of its applications is to develop deep neural networks. The module tensorflow.nn provides support for… Read More
Tensorflow
Machine Learning
Python
Underscore.js _.contains Function
Underscore.js _.contains() function is used to check whether a particular item is given in the list or not. This function needs to pass the list… Read More
JavaScript - Underscore.js
JavaScript
JQuery
Web Technologies
Check if two given key sequences construct same BSTs
Given two arrays which represent two sequences of keys that are used to create BSTs. Imagine we make a Binary Search Tree (BST) from each… Read More
Binary Search Tree
DSA
Find a point such that sum of the Manhattan distances is minimized
Given N points in K dimensional space where and . The task is to determine the point such that the sum of Manhattan distances from this point… Read More
DSA
Geometric
Mathematical
Sorting
Inter-process Communication using a shared stack
Inter Process Communication through shared memory is a concept where two or more process can access the common memory.the communication is done via this shared… Read More
Misc
Printing Matrix Chain Multiplication (A Space Optimized Solution)
Prerequisite : Dynamic Programming | Set 8 (Matrix Chain Multiplication)Given a sequence of matrices, find the most efficient way to multiply these matrices together. The… Read More
DSA
Dynamic Programming
Burst Balloon to maximize coins
We have been given N balloons, each with a number of coins associated with it. On bursting a balloon i, the number of coins gained… Read More
Picked
Samsung
Competitive Programming
DSA
Dynamic Programming
Python calendar module : monthdays2calendar() method
Calendar module allows to output calendars like program, and provides additional useful functions related to the calendar. Functions and classes defined in Calendar module use… Read More
Python Calander-module
python-modules
Python
Python calendar module : yeardayscalendar() method
Calendar module allows to output calendars like program, and provides additional useful functions related to the calendar. Functions and classes defined in Calendar module use… Read More
Python Calander-module
python-modules
Python
Goldman Sachs Interview Experience | (FTE On-Campus )
Following are the details of my interview with Goldman Sachs. Round 1: Online Coding Round on Hackerrank (1 hours 30 mins) The online test was… Read More
Experiences
Interview Experiences
Python iter() method
python iter() method returns the iterator object, it is used to convert an iterable to the iterator. iter Function in Python SyntaxThe iter() method in… Read More
python
Python-Built-in-functions
python-list
python-list-functions
Python
Program for assigning usernames using Trie
Suppose there is a queue of n users and your task is to assign a username to them. The system works in the following way.… Read More
Trie
Advanced Data Structure
DSA
Strings
Python | Pandas.pivot()
pandas.pivot(index, columns, values) function produces a pivot table based on 3 columns of the DataFrame. Uses unique values from the index/columns and fills them with… Read More
Python pandas-dataFrame
Python-pandas
Python
Level Ancestor Problem
The level ancestor problem is the problem of preprocessing a given rooted tree T into a data structure that can determine the ancestor of a… Read More
Advanced Data Structure
DSA
Dynamic Programming
Graph
Tree
Minimum number of days required to complete the work
Given N works numbered from 1 to N. Given two arrays, D1[] and D2[] of N elements each. Also, each work number W(i) is assigned… Read More
Constructive Algorithms
cpp-vector
Greedy Algorithms
DSA
Greedy
Rachit Jain – Geek on the top | “Stop starting, start finishing: Don’t just give up on things and then start doing something else”
Geek on the top is all about success stories of Geeks who are working hard to chase their goals and are the inspiration for other… Read More
Misc
Lexicographically smallest permutation of a string with given subsequences
Given a string consisting only of two lowercase characters and and two numbers and . The task is to print the lexicographically smallest permutation of the given string such… Read More
Algorithms
DSA
Greedy
Strings
Product of lengths of all cycles in an undirected graph
Given an undirected and unweighted graph. The task is to find the product of the lengths of all cycles formed in it.Example 1:    The above… Read More
DFS
Graph Coloring
graph-cycle
DSA
Graph
Nutanix Interview Experience (On-Campus 2018)
The entire process consisted of 5 rounds: 1 online coding, 1 debugging, 2 Technical and 1 HR/System Design Round. The minimum criteria for the online… Read More
Experiences
Interview Experiences
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