Created
September 3, 2012 23:11
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Project Euler 44
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| #!/usr/bin/ruby | |
| a=1.step(9999).map{|i|i*(3*i-1)/2} | |
| h={} | |
| a.each{|e|h[e]=1} | |
| b=[] | |
| a.length.times{|i| | |
| (i+1).step(a.length-1){|j| | |
| if h[a[j]+a[i]] && h[a[j]-a[i]] then b.push(a[j]-a[i]) end | |
| } | |
| } | |
| p b.min |
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