Created
April 26, 2012 01:50
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second smallest number in an array
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| def second_smallest arr | |
| min_arr = [] | |
| arr.each_slice(2) do |x,y| | |
| if y.nil? or x < y | |
| min_arr << x | |
| else | |
| min_arr << y | |
| end | |
| end | |
| if min_arr.size > 2 | |
| sec_min,min = second_smallest(min_arr) | |
| min_ind = min_arr.index(min) | |
| if min_ind % 2 == 0 | |
| if !min_arr[min_ind+1].nil? and sec_min > min_arr[min_ind+1] | |
| sec_min = min_arr[min_ind+1] | |
| end | |
| else | |
| if sec_min > min_arr[min_ind-1] | |
| sec_min = min_arr[min_ind-1] | |
| end | |
| end | |
| return sec_min, min | |
| else | |
| if min_arr[0] < min_arr[1] | |
| return min_arr[1],min_arr[0] | |
| else | |
| return min_arr[0],min_arr[1] | |
| end | |
| end | |
| end |
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