03-24-2013
You explicitly state that file 1 is not sorted, but you don't say whether or not file 2 is sorted. Is file 2 sorted by increasing numeric values in fields 1, 2, and 3 as shown in your example, or is file 2 also unsorted?
What is the range of the values in fields 1, 2, and 3?
Are all of the values in fields 1, 2, and 3 integers or are floating point values also included?
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