Interview Questions

Q:

Write an algorithm to separate all ones & zeroes in an array.

Answer

1. Have two indexes pointing to two ends of array, say i and j.


2. Approach towards each other with a check condition that they dont cross each other.


3. Each iteration of while loop, swap the numbers pointed by two indexes when num[i] index number is not equal to 1.


 


void sort()


{


     int a[]={1,0,0,0,1,1,0,1,0,1,0,0,1,0};


     int i=0;


     int j=13;


     int temp;


      while(j>i)


     {


          if(a[i]==1)


                 i++;


          if(a[j]==0)


                 j--;


          if(a[i]==0)


         {


                 temp=a[i];


                a[i]=a[j];


                a[j]=temp;


         }


     } 


     for(i=0;i<14;i++)


             Console.Write(a[i]+", ");


}


Output: 1,1,1,1,1,1,0,0,0,0,0,0,0

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0 2700
Q:

What is the difference between a contract and a scheduling agreement?

Answer

A scheduling agreement can be made for Consignment, Subcontracting and stock transfer. A contract, also known as a blanket PO, can be made for standard items and can be restricted to a Value or QTY.

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Subject: SAP

2 2700
Q:

How would you reverse a doubly-linked list?

Answer

This problem isn't too hard. You just need to start at the head of the list, and iterate to the end. At each node, swap the values of pNext and pPrev. Finally, set pHead to the last node in the list.


Node * pCurrent = pHead, *pTemp;


while (pCurrent)


{


  pTemp = pCurrent->pNext;


  pCurrent->pNext = pCurrent->pPrev;


  pCurrent->pPrev = temp;  


  pHead = pCurrent;


  pCurrent = temp;


}

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0 2697
Q:

What is RAC and how is it different from non RAC databases?

Answer

Oracle Real Application Clusters (RAC) is a software component we can add to a high-availability solution that enables users on multiple machines to access a single database with increased performance. RAC comprises two or more Oracle database instances running on two or more clustered machines and accessing a shared storage device via cluster technology. To support this architecture, the machines that host the database instances are linked by a high-speed interconnect to form the cluster. Oracle RAC offers features in the following areas:


- Scalability


- Availability


- Load balancing


- Failover

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Subject: Oracle

0 2696
Q:

Which platforms does Silverlight support?

Answer

  • Mac OS 

  • Windows Vista 

  • Windows XP SP2 

  • Windows 2000 

  • Windows Server 2003 

  • Linux (Moonlight) 



 

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Subject: Web Technology

0 2695
Q:

What is PEAR in php?

Answer

PEAR(PHP Extension and Application Repository) is a framework and repository for reusable PHP components. PEAR is a code repository containing all kinds of php code snippets and libraries. 


PEAR also offers a command-line interface that can be used to automatically install "packages".

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Subject: PHP

0 2688
Q:

An algorithm written once which can be used in many places is called

A) Block B) Function
C) Datatype D) None
 
Answer & Explanation Answer: B) Function

Explanation:

Function is an algorithm which can be used any where in the program when required

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Filed Under: Java

0 2688
Q:

If the variable $a is equal to 5 and variable $b is equal to character a, what’s the value of $$b?

Answer 100, it’s a reference to existing variable.
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Subject: PHP

0 2685