I'm sure this must be easy; but I can't figure out how to do it. I have a data file with several thousand records; 1 record per line. Each record has a variable "i" and a variable "x". I wish to read the input file, and put "x" into a 1-dimensional array where the array element is identified by "i"; and some values of "i" are missing (e.g., i = 1, 2, 3, 5, 6, 10, ...). Can anybody help?
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