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Exercise 12.2: writeNums
Write a method writeNums that accepts an integer parameter n and prints the first n integers starting with 1 in sequential order, separated by commas. For example, the following calls produce the following output:
| Call | Output |
|---|---|
writeNums(5); |
1, 2, 3, 4, 5 |
writeNums(12); |
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 |
Your method should throw an IllegalArgumentException if passed a value less than 1. Note that the output does not advance to the next line.
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