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Hacker Earth Questions

Hackerearth : Counting Subarrays

July 7, 2018 by Dhaval Dave

Given an array A of N positive integer values. A sub-array of this array is called Odd-Even sub-array if the number of odd integers in this sub-array is equal to the number  of even integers … Read More

Filed Under: Algorithm, Array, Hacker Earth Questions Tagged With: Array, Hashing, implementation

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

Handle duplicates in Binary Search Tree

April 17, 2017 by Dhaval Dave

In a Binary Search Tree (BST), all keys in left subtree of a key must be smaller and all keys in right subtree must be greater. So a Binary Search Tree by definition has distinct … Read More

Filed Under: Amazon Interview Question, Flipkart Interview Questions, Hacker Earth Questions, Interview Questions, Microsoft Interview Questions, problem Tagged With: Binary Search Tree, Binary Tree

Minimum insertions to form a palindrome

April 15, 2017 by Dhaval Dave

Form Palindrome

Given a string, find the minimum number of characters to be inserted to form Palindrome string out of given string

Before we go further, let us understand with few examples:
ab: Number of insertions required … Read More

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

Urban Ladder Written Test.

May 19, 2015 by Dhaval Dave

I have given Urban Ladder Online Test and my experience and questions are as below.

MCQ ROUND

Q1) An implementation of a queue Q, using two stacks S1 and S2, is given below:… Read More

Filed Under: Hacker Earth Questions, Interview Experience

Convert number to words java

May 19, 2015 by Dhaval Dave

Write a code to Convert number to words . example  ip 15  op : fifteen

ip : 1234  op : one thousand and thirty four

Algorithm : When we detect a number at any place … Read More

Filed Under: Flipkart Interview Questions, Hacker Earth Questions, Interview Questions, problem Tagged With: Java, string

FizzBuzz Solution C C++

May 19, 2015 by Dhaval Dave

Write a program that prints the numbers from 1 to 100. But for multiples of three print “Fizz” instead of the number and for the multiples of five print “Buzz”. For numbers which are multiples … Read More

Filed Under: Adobe Interview Questions, Hacker Earth Questions, Interview Questions, Microsoft Interview Questions, problem Tagged With: c, Mathematical

Convert Decimal to Roman numbers / Romanizer HackerEarth Code

May 10, 2015 by Dhaval Dave

Roman number conversion

Set of Numbers are given to you.
convert them to Roman numbers.
Solution is in Hacker Earth style… Read More

Filed Under: Adobe Interview Questions, Amazon Interview Question, Flipkart Interview Questions, Hacker Earth Questions, Interview Questions, Microsoft Interview Questions, problem Tagged With: Mathematical, string

Print Power Set of a Set

April 18, 2015 by Dhaval Dave

Print Power Set of a Set of character.

Power Set Power set P(S) of a set S is the set of all subsets of S. For example S = {a, b, c} then P(s) =

… Read More

Filed Under: Adobe Interview Questions, Hacker Earth Questions, Interview Questions, problem Tagged With: Array, Recursion, string

Stock Buy Sell to Maximize Profit

April 18, 2015 by Dhaval Dave

Stock Price on each day is given in an array.
Example : [ 10, 12, 7, 5, 9, 15, 13, 18 ] Find the max profit that you can make by buying and selling in … Read More

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

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