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| require 'pry' | |
| # Find the maximum | |
| def maximum(arr) | |
| # arr.max | |
| big = arr[0] | |
| arr.each do |x| | |
| big = x if big < x | |
| end | |
| big | |
| end | |
| # expect it to return 42 below | |
| result = maximum([2, 42, 22, 02]) | |
| puts "max of 2, 42, 22, 02 is: #{result}" | |
| # expect it to return nil when empty array is passed in | |
| result = maximum([]) | |
| puts "max on empty set is: #{result.inspect}" | |
| #expect 0 | |
| result = maximum([-23, 0, -3]) | |
| puts "max of -23, 0, -3 is: #{result}" | |
| #expect 6 | |
| result = maximum([6]) | |
| puts "max of just 6 is: #{result}" | |
| ## expected output | |
| # max of 2, 42, 22, 02 is: 42 | |
| # max on empty set is: nil | |
| # max of -23, 0, -3 is: 0 | |
| # max of just 6 is: 6 |
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