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I am using C# and have a list of int numbers which contains different numbers such as {34,36,40,35,37,38,39,4,5,3}. Now I need a script to find the different ranges in the list and write it on a file. for this example it would be: (34-40) and (3-5). What is the quick way to do it?
thanks for the help in advance;
As Mike said, first sort the list. Now, starting with the first element, remember that element, then compare it with the next one. If the next element is 1 greater than the current one, you have a contiguous series. Continue this until the next number is NOT contiguous. When you reach that point, you have a range from the first remembered value to the current value. Remember/output that range, then start again with the next value as the first element of a new series. This will execute in roughly 2N time (linear).