How to Sort Array in Ruby?
Ruby has built-in methods to sort given array.
Syntax:
This sort will retruns new Array
similarly sort! will also sort the array, instead of creating new array it will modify the existing array
Example
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# Array with initail values
numbers = [5,3,2,1]
# sort numbers array and return new array with sorted elements.
numbers.sort
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Output
with sort!
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# Array with initail values
numbers = [5,3,2,1]
# sort numbers array and return new array with sorted elements.
numbers.sort!
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Output
Customized Sorting With sort_by
Examples
Sort by length
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strings = %w(foo test blog a)
strings.sort_by(&:length)
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Output
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=> ["a", "foo", "test", "blog"]
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Example 2:
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table = ["Kiran","Powel","Polard","Lara","Shreya","Shakeela"]
puts "Array sort implementation"
new_arr = table.sort{|a,b| b<=>a}
puts "Array after sorting: #{new_arr}"
puts "Original Array instance: #{table}"
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Output
Array sort implementation
Array after sorting: ["Shreya", "Shakeela", "Powel", "Polard", "Lara", "Kiran"]
Original Array instance: ["Kiran", "Powel", "Polard", "Lara", "Shreya", "Shakeela"]
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Sort by Capital Words
Example 3:
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text="Ruby is programming Language"
text
.split
.sort_by { |w| w[0].match?(/[A-Z]/) ? 0 : 1 }
.join(" ")
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Output
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=> "Ruby Language is programming"
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Sort in Reverse Order
How to sort array revers order with length
Example:
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strings = "Ruby is Programming language"
strings.split.sort { |a,b| a.length <=> b.length }
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Output
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=> ["is", "Ruby", "language", "Programming"]
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