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Dhaval Dave

Experience iQuanti, Tracxn, Oracle, Pragma, VVP Engineering College
Education M.Tech NITWarangal, B.Tech Saurashtra University
Research  “An Effective Black hole Attack Detection
Mechanism using  PBAck MANET”
LinkedIn in.linkedin.com/in/davedhaval87
Contact  davedhaval87@gmail.com

 

 

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Proposed Unique Code Solutions

47) Mirror of Tree
46) Count Possible Decodings of a given Digit Sequence
45) Check if an array has duplicate numbers in O(n) time and O(1) space
44) Find the number ABCD such that when multipled by 4 gives DCBA.
43) Word Break Problem
42) Puzzle : 100 doors in a row Visit and Toggle the door
41) Maximum of all subarrays of size k
40) Level order traversal in spiral form
39) Longest Increasing Subsequence
38) HackerEarth : The Magic HackerEarth Nirvana solutions Hiring Challenge
37) Kony : Given LinkedList Divide LL in N Sub parts and delete first K nodes of each part
36) LimeRoad : Find two non repeating elements in an array of repeating elements
35) Sort Stack in place
34) HackerEarth : Flipkart’s Drone Link for Question  Link for Solution
33) Puzzle : 8 teams are participating. Each team plays twice with all other teams. 4 of them will go to the semi final. Minimum and Maximum how many matches should a team win
32) Common Ancestor in a Binary Tree And/OR Binary Search Tree
31) Given array of 0’s and 1’s. All 0’s are coming first followed by 1’s. find the position of first 1
30) Generate next palindrome number
29) Print all nodes that are at distance k from a leaf node
28)FaceBook : Max Sum in circularly situated Values
27) Given Set of words or A String find whether chain is possible from these words or not
26) Connect n ropes with minimum cost
25) Sort an array according to the order defined by another array
24) Implement LRU Cache
23) Amazon : Get Minimum element in O(1) from input numbers
22) Flipkart : TicTacToe Game As Asked in Flipkart
21) Amazon : Sort an array according to the order defined by another array
20) Amazon : Connect n ropes with minimum cost
19) Find an index i such that Arr [i] = i
18) Flipkart SDE2 : Check a String is SUBSEQUENCE of another String Find Minimum length for that ( DNA Matching )
17) Flipkart : Add Sub Multiply very large number stored as string
16) Code Chef’s PRGIFT
15) Code Chef’s Problem RRCOPY
14) Code Chef’s Problem SGARDEN
13) Amazon : Find Longest Consecutive sequence in Array of numbers
12) Flipkart/Amazon : Check Binary Tree is Binary Search Tree or not
11) Flipkart : Printing each word in string backwards
10) Amazon: Test Cases for Round Function
09) Flipkart : Find Percentage of Words matching in Two Strings
08) Flipkart : Wrong Directions given find minimum Moves so that he can reach to the destination
07) Amazon: Find next greater number with same set of digits
06) Amazon: 25 horses 5 tracks Find 3 fastest puzzle
05) HackerRank: Rectangular chocolate bar Create at least one piece which consists of exactly nTiles tiles
04) Amazon: N Petrol bunks or City arranged in circle. You have Fuel and distance between petrol bunks. Is it possible to find starting point so that we can travel all Petrol Bunks
03) Microsoft : Print vertical sum of all the axis in the given binary tree
02) Amazon : Function flatten() which flattens Linked List in sorted way
01) Amazon: Pythagorean Triplets in an array in O(N)

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Comments

  1. Nilesh Verma says

    August 19, 2017 at 12:17 pm

    Dhaval sir is by far the best data structures and algorithms mentor i have known till date.I am extremely glad and lucky to have a mentor like him. His approach to teaching data structures and algorithms is unique as he first helps in building the logic rather than rushing through code. Therefore a student can tackle any type of interview problem , if he/she studies carefully whatever is taught by him in class and can easily crack any top level company’s coding interview.

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