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Interview Problem — Make array increasing and then decreasing
source link: http://codeforces.com/blog/entry/104884
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Interview Problem — Make array increasing and then decreasing
Rearrange array in increasing-decreasing order.
Input: 8 7 1 6 5 9
Output: 1 5 6 9 8 7
Let's consider there are no duplicates as of now.
There is no restriction on the length of increasing and decreasing sequence in the array.
We have to do it in-place O(N), without using extra memory.
Anyone could suggest the O(N) approach?
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