理想情况下,我想要一个Ruby或Javascript的解决方案用数组代替javascript中的范围就可以了。
我想输入如下:
[0..301, 230..268, 242..364, 574..579, 587..593]
或
[0,301, 230,268, 242,364, 574,579, 587,593]
把它变成这样:
[0..230, 230..242, 242..268, 268..301, 301..364, 574..579, 587..593]
或
[[0,230], [230,242, [242,268], [268,301], [301,364], [574,579, [587,593]]
任何帮助都很好这种方法有帮助,但不是完全的,因为它提供了完整的范围而不是分块的范围,How do I summarize array of integers as an array of ranges?。
最佳答案
下面是一个ruby解决方案:
ranges = [0..301, 230..268, 242..364, 574..579, 587..593]
endpoints = ranges.map{|r| [r.first, r.last]}.flatten.sort
values = ranges.map{|r| r.to_a}.reduce(:+)
new_ranges = []
endpoints.reduce do |x, y|
r = Range.new(x,y);
new_ranges << r if r.all?{|v| values.include? v}
y
end
puts new_ranges
#0..230
#230..242
#242..268
#268..301
#301..364
#574..579
#587..593