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System Design: Designing a LLD for Hotel Booking

February 3, 2020 by Arshdeep Singh

Hotel Reservation system such as Oyo, Trivago, Hotels.com etc is a really big project, considering different aspects of System Design. The main challenges included in that is to design HLD of the whole system which … Read More

Filed Under: Uncategorized

Leetcode: Edit Distance

October 10, 2019 by Arshdeep Singh

Given two words word1 and word2, find the edit distance between word1 and word2 i.e. minimum number of operations required to convert word1 to word2.

You have the following 3 operations permitted on … Read More

Filed Under: Algorithm, Amazon Interview Question, Google, LeetCode, Uncategorized Tagged With: Dynamic Programming, Recursion, string

Serialise Deserialise N-ary Tree

April 19, 2018 by Dhaval Dave

Serialise Deserialise N-ary Tree : N-ary tree’s each node contains at-most N children. Serialise the tree means storing the tree in array or file maintaining tree’s exact structure. On the other hand Deserialise the tree … Read More

Filed Under: Uncategorized

Printing intermediate Integers between one element & next element of array

February 16, 2018 by Dhaval Dave

Problem : Printing intermediate Integers

User entered numbers are set into array.Intermediate integer of each pair of successive elements to be printed.

Input :
Input of 1st line is number of element in array,inputs of … Read More

Filed Under: Uncategorized

Sequence Finder Dynamic Programming

January 28, 2018 by Dhaval Dave

Sequence Finder

Given two arrays A and B of equal size, you have to determine whether the following the sequence is possible or not.

… Read More

Filed Under: Algorithm, Array, Interview Questions, Uncategorized Tagged With: Array, Dynamic Programming

Stickler thief

December 28, 2017 by Dhaval Dave

Stickler thief and wants to loot money from a society of n houses placed in a line. He is a weird person and follows a rule while looting the houses and according to the rule … Read More

Filed Under: Uncategorized

Trapping Rain Water

May 25, 2017 by Dhaval Dave

trapping rain water

Trapping Rain Water or Water collected between towers : Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after … Read More

Filed Under: Amazon Interview Question, Hacker Earth Questions, Interview Questions, Uncategorized Tagged With: Array

Best Java Book | Top Java Programming Book for Beginners

August 26, 2016 by Dhaval Dave

Best Java Books

best java programming books

Being certified Java programmer SE 7, Enterprise Edition ( EE ) Application, etc. from Oracle & ex-Developer at Oracle, I can refer some of the best java books for learning.

Why Java?  Java is most … Read More

Filed Under: Interview Questions, problem, Uncategorized Tagged With: Java

SAP Interview Questions

March 1, 2015 by Dhaval Dave

In SAP Interview, Questions are pretty simple and straight forward, easy to code but they ask you to write proper unit test cases and they check if you have handles all edge cases or not.… Read More

Filed Under: Interview Experience, Uncategorized

SAP Off Campus Hiring_ March 2015 Computer Skills

March 1, 2015 by Dhaval Dave

… Read More

Filed Under: Interview Experience, Uncategorized

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