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Merge two sorted array inplace

Given an integer array of which both first half and second half are sorted. Write a function to merge the two parts to create one single sorted array in place [do not use any extra space].
e.g. If input array is [1,3,6,8,-5,-2,3,8] It should be converted to: [-5,-2,1,3,3,6,8,8]
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  1. AnonymousNovember 12, 2010 at 5:24 AM

    is there any constraint on TC? if not following is quadratic
    start with 2 pointers,
    p1: beginning of array
    p2: at the middle(beginning of the second half)
    compare the two,
    while(p1 is does not reach middle)
    if(*p2<*p1)
    {
    rotate the array from p1 to p2
    incr p1 nad p2
    }
    else
    incr p1
    // if equal then you can incr either p1 or p2

    ReplyDelete
  2. AnonymousFebruary 10, 2011 at 3:59 PM

    nlogn mein to aise hi ho jayega yar
    y doin it in quadrtc

    ReplyDelete

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