Computer Science Homework Solutions
Problem
#9266

Number missing from sequence

This is a problem solving exercise that a certain major software company likes to use in their interviews.  Like many algorithm design problems, there are many possible answers, but I have presented one of the more generally accepted ones.

A stream of integers between 1 and 1 million is received by a computer.  The numbers arrive in random order, however each number only appears once in the sequence.  How would you determine which one number was missing from the sequence?

Solution
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Chris Bardon, MASc - n/a
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