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Advanced SQL Injection

October 4, 2014 by Dhaval Dave

STEP 1) Find Websites from Google with following code

First Try to find out which websites may be Hackable from SQL Injection.
Website which has
.aspx?id=1 
.php?category=1
.php?cat=2
.php?id=5426(any id)


may not so immune to

… Read More

Filed Under: problem Tagged With: Hacking

Generate next palindrome number

September 17, 2014 by Dhaval Dave

Several Companies like MS, Amazon and Flipkart has started asking this question to Generate next palindrome number.

Say K is given, Generate N such that N is palindrome and N > K.

Logic 1)  Create

… Read More

Filed Under: Adobe Interview Questions, Amazon Interview Question, Flipkart Interview Questions, Microsoft Interview Questions, problem Tagged With: Array

Flipkart SDET Interview Experience

September 11, 2014 by Dhaval Dave

I have recently appeared for Flipkart Interview for SDET-1 position
Sharing my Interview experience.

There were Total 5 rounds
Round 1 ) Telephonic Round
I was asked two questions
Q1) Find Pythagoras triplet in array

… Read More

Filed Under: Flipkart Interview Questions, Interview Experience

How Radix sort works

September 4, 2014 by Dhaval Dave

Radix sort is simple and unique sorting method.
It sorts number with LSD and MSD ( Lease Significant Digit to Most Significant Digit)

Radix Sort puts the elements in order by comparing the digits of

… Read More

Filed Under: Interview Questions, problem Tagged With: Sorting

Max Sum in circularly situated Values

September 1, 2014 by Dhaval Dave

This question was asked first in FACEBOOK On Campus for Internship.

There are N trees in a circle. Each tree has a fruit value associated with it.
A bird can sit on a tree for
… Read More

Filed Under: Interview Questions, problem Tagged With: Array

Find if two rectangles overlap

August 27, 2014 by Dhaval Dave

Given two rectangles, find if the given two rectangles overlap or not.

Note that a rectangle can be represented by two coordinates, top left and bottom right. So mainly we are given following four coordinates.

… Read More

Filed Under: Amazon Interview Question, Interview Questions, Microsoft Interview Questions, problem Tagged With: Mathematical

Search element in a matrix with all rows and columns in sorted order

August 27, 2014 by Dhaval Dave

Given a matrix containing unique numbers in which all rows and columns are in sorted order.
And You have to search an element output its location row,column number .
If no such element the just
… Read More

Filed Under: Amazon Interview Question, Flipkart Interview Questions, Interview Questions, Microsoft Interview Questions, problem Tagged With: 2d matrix, Binary Search

Implement LRU Cache

August 27, 2014 by Dhaval Dave

Generally Interviewer can ask you simply to implement LRU cache, first explain which data structure you will use and why.
Its well known coding question being asked by all Tech giants like Amazon , Flipkart,
… Read More

Filed Under: Adobe Interview Questions, Amazon Interview Question, Flipkart Interview Questions, Interview Questions, Microsoft Interview Questions, problem Tagged With: Array, Hashmap, Linked List, Queue, Stack

Given Set of words or A String find whether chain is possible from these words or not

August 25, 2014 by Dhaval Dave

You are given N strings or N words. You have to find whether a chain can be formed with all the strings given namely n ?
Chain : A chain can be formed between 2
… Read More

Filed Under: Amazon Interview Question, Flipkart Interview Questions, Interview Questions, Microsoft Interview Questions, problem Tagged With: Dynamic Programming, string

Memory Efficient LinkedList

August 24, 2014 by Dhaval Dave

Memory efficient linked list is also called XOR Linked List.
To use lesser memory in doubly link list, such data structure is used.

An ordinary doubly linked list stores addresses of the previous and next

… Read More

Filed Under: problem Tagged With: Linked List

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