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Stack

Find Nearest Minimum number in left side in O(n)

May 15, 2016 by Dhaval Dave

Given an array of integers, find the nearest smaller number for every element such that the smaller element is on left side.

Examples:

Input:  arr[] = {1, 6, 4, 10, 2, 5}
Output:         {-1, 1, 
… Read More

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

Generic Object Oriented Stack with Template

April 27, 2015 by Dhaval Dave

Generic Stack with OOPS

Here We have implemented a Generic Stack Example with Templates in C++ where we can Push any element into stack.

#include <iostream>
#include <vector>
#include <cstdlib>
#include <string>
#include <stdexcept>
using namespace std;… Read More

Filed Under: Adobe Interview Questions, Flipkart Interview Questions, Interview Questions, problem Tagged With: Stack

Level order traversal in Spiral form

December 21, 2014 by Dhaval Dave

Write a function to print spiral order traversal of a tree or Write function for Tree traversal in Spiral ZigZag form
For below tree, function should print 1, 2, 3, 7, 6, 5, 4.

           [1]
          
… Read More

Filed Under: Amazon Interview Question, Interview Questions, Microsoft Interview Questions, problem Tagged With: Binary Tree, Stack, tree

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

Get Minimum element in O(1) from input numbers or Stack

August 16, 2014 by Dhaval Dave

Question : Get Minimum element in O(1) from Input Numbers or Stack

– With any traditional way we can’t get minimum element in O(1)
– so we need to come up with different data structure.

… Read More

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

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