it is given in tanenbaum....

On Sat, Jul 23, 2011 at 9:49 PM, Pankaj <[email protected]> wrote:
> Can you please tell us from where we can find such questions?
>
> On Sat, Jul 23, 2011 at 4:21 PM, Nikhil Gupta <[email protected]>
> wrote:
>>
>> Nice question Kamakshi. The person above has given almost a perfect
>> answer.
>> For example i=3, we will pop the elements one by one from the top of the
>> 1st stack and pushed to the 2nd stack until the value (top - i) is reached.
>>
>> On Sat, Jul 23, 2011 at 3:52 PM, ross <[email protected]> wrote:
>>>
>>> Well. the idea of an array is - given an integer 'i', you should
>>> support RANDOM ACCESS to the ith element in the 1d array.
>>> Since, we have two stacks, if you want to access an ith element ( say,
>>> i = 5 ),pop all the top 4 elements from the 1st stack and push it to
>>> the second stack.
>>> Now, access the 5th element on top of the 1st stack, then, pop the
>>> elements from the 2nd stack back and push them to the 1st stack.
>>> However, access is O(n) due to the inherent property of a stack which
>>> forbids random access!
>>>
>>>
>>> On Jul 23, 2:00 pm, Kamakshii Aggarwal <[email protected]> wrote:
>>> > consider a language that does no have arrays...but u can define stack
>>> > data
>>> > type like
>>> > stack s;
>>> > using pop ,push and other operations on  2 stacks,how can one
>>> > dimensions
>>> > array can be implemented??
>>> >
>>> > --
>>> > Regards,
>>> > Kamakshi
>>> > [email protected]
>>>
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>>
>>
>>
>> --
>> Nikhil Gupta
>> Senior Co-ordinator, Publicity
>> CSI, NSIT Students' Branch
>> NSIT, New Delhi, India
>>
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