XY-Sort - Qiita

#!/usr/bin/env ruby #http://qiita.com/Nabetani/items/7b08b0eb9ef84d7cfe49 #http://nabetani.sakura.ne.jp/hena/ord7xysort/ STDOUT.sync=true class Array def stable_sort(idx) sort_by.with_index{|s,i|[s[idx],i]} end end A=[ [4,1,4,2,1,3], [7,3,2,0,5,0], [2,3,6,0,6,7], [6,4,5,7,5,1], [3,1,6,6,2,4], [6,0,5,5,5,1], ] F={ 'u'=>lambda{|a|a.stable_sort(0)}, 'v'=>lambda{|a|a.stable_sort(1)}, 'w'=>lambda{|a|a.

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