From: Matthew Kerwin <lists@...>
Date: 2013-07-31T06:28:31+09:00
Subject: Re: Working through Ch.10 for learning to program 2.0 (Chris Pine)

Awesome, three completely different implementations.

Mine's:

a.inject []{|s,x|(i=s.find_index{|y|y>=x})?s[0...i]+[x]+s[i..-1]:s+[x]}

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