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tareksamni/sort.rb

Last active September 28, 2017 19:55
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Yelp online question
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sort.rb
# Input:
businesses = [
{ rating: 1, id: 1000 },
{ rating: 4, id: 1020 },
{ rating: 5, id: 1300 },
{ rating: 5, id: 1040 },
{ rating: 9, id: 1005 },
{ rating: 2, id: 1104 },
{ rating: 3, id: 1400 }
]
# Solution:
businesses.sort_by.with_index { |item, idx| [-item[:rating], idx] }
# output:
# businesses = [
# { rating: 9, id: 1005 },
# { rating: 5, id: 1300 },
# { rating: 5, id: 1040 },
# { rating: 4, id: 1020 },
# { rating: 3, id: 1400 },
# { rating: 2, id: 1104 },
# { rating: 1, id: 1000 }
# ]
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