Find all the sequences of consecutive repeated numbers in a numeric array, returning the indices where each sequence starts and ends. The output is a matrix nx2: the starting indices of the n sequences are in the first column, the ending indices are in the second one.
For example, if x=[0 7 7 3 8 7 1 3 5 5 5], we have that the number '7' appears consecutevely from index 2 to 3, while the number '5' from index 9 to 11, so y = [2 3; 9 11]
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It would be nice making this working with nan and adding the repeated values as second output
Could I convince you to use isempty() for the last test, rather than isequal(..., [])? Since -- for n>0 runs in the input array -- the output is n-by-2, it is quite natural for the output to be 0-by-2 when there are no runs, but a 0-by-2 empty array is not equal to [].
The last test case has been changed to use isempty() instead of isequal().
Thanks, Dyuman!