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Computers and Technology, 19.10.2021 14:00 linshweyioo9931
When we print computer documents, there is a common form used to specify the page numbers to print. Generally, commas separate page specifications, where each page specification is a single page number, or a contiguous range of pages. In a page specification, a dash or a colon can separate two numbers: for a dash, these numbers specify the first and last pages in a range to print (inclusive); for a colon, they specify the first page and how many subsequent pages to print (so 10:3 means 3 pages starting at 10: 10, 11, and 12). Finally, if either of these forms is used, we can optionally write a slash followed by a number (call it n), which means for the page specification, print every nth page in the range (so 10-20/3 means 10 through 20 , but only every 3rd page: 10, 13, 16, and 19). Write a regular expression that ensures group 1 is the first page; group 2 is a dash or colon (or None if not present); group 3 is the number after the dash or colon (or None if not present); group 4 is the number after the slash (or None if not present). Write a regular expression pattern that describes a single page specification: the integers you specify here must start with a non-0 digit. Here are examples that should match/should not match a single page specification:
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When we print computer documents, there is a common form used to specify the page numbers to print....
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