Interview Question


Country: United States




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This looks like homework (or you are just trying to challenge the folks here).

Which company was this asked in? Which location? Phone screen? Onsite?

- Anonymous August 26, 2012 | Flag Reply
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0
of 0 vote

yea its homework actually i need solution of this prblm

- Anonymous August 26, 2012 | Flag Reply
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Comment hidden because of low score. Click to expand.
0
of 0 vote

This is actually kind of an interesting problem. You need to make several levels of arrays, each one having one element that is the minimum of two elements in a lower level.

If you have 1 2 3 4 5 6 7 8
Your first summary level will be 1 3 5 7
The next will be 1 5
and the final just 1

I'll leave it to you to determine how to use this to find the minimum of any range in logN time. Hint: a range like 3-7 can be broken into 4-7 (which is one lookup in the second summary level), and 3. You can break any range into just logN pieces that can be looked up in the summary arrays.

- eugene.yarovoi September 03, 2012 | Flag Reply


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