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https://github.com/a7bari/range-extraction-codewars

A format for expressing an ordered list of integers is to use a comma separated list of either
https://github.com/a7bari/range-extraction-codewars

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A format for expressing an ordered list of integers is to use a comma separated list of either

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# Range-Extraction-Codewars
A format for expressing an ordered list of integers is to use a comma separated list of either

- individual integers
- or a range of integers denoted by the starting integer separated from the end integer in the range by a dash, '-'. The range includes all integers in the interval including both endpoints. It is not considered a range unless it spans at least 3 numbers. For example "12,13,15-17"

Complete the solution so that it takes a list of integers in increasing order and returns a correctly formatted string in the range format.

# exemple

range_extraction({-6, -3, -2, -1, 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 17, 18, 19, 20});
// returns "-6,-3-1,3-5,7-11,14,15,17-20"

# link :
https://www.codewars.com/kata/51ba717bb08c1cd60f00002f