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| # Sort the array from lowest to highest | |
| def sort(arr) | |
| arr.sort | |
| end | |
| def swap(arr, x, y) | |
| temp = arr[x] | |
| arr[x] = arr[y] | |
| arr[y] = temp | |
| end | |
| def bubble_sort(arr) | |
| j = arr.length - 1 | |
| loop do | |
| i = 0 | |
| swapped = false | |
| while i < j | |
| if arr[i] > arr[i + 1] | |
| swap(arr, i, i + 1) | |
| swapped = true | |
| end | |
| i += 1 | |
| end | |
| j -= 1 | |
| return arr if swapped == false | |
| end | |
| end | |
| # Find the maximum | |
| def maximum(arr) | |
| bubble_sort(arr).last | |
| end | |
| def minimum(arr) | |
| bubble_sort(arr).first | |
| 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 2 below | |
| result = minimum([2, 42, 22, 02]) | |
| puts "min 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}" | |
| result = minimum([]) | |
| puts "min on empty set is: #{result.inspect}" | |
| result = maximum([-23, 0, -3]) | |
| puts "max of -23, 0, -3 is: #{result}" | |
| result = maximum([6]) | |
| puts "max of just 6 is: #{result}" |
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