From: Timothy Hunter <cyclists@...>
Date: 2006-01-04T22:22:58+09:00
Subject: Re: Newbie question about nested sort

Grehom wrote:
> what am I doing wrong?  I wanted to sort primarily on count (second
> position in array), then sub-sort alphabetically (first position in
> array)
> 
> char_freq = [["c", 2],["b", 5],["a", 2]]
> sorted_freq = char_freq.sort {|a, b| b[1]<=>a[1] || a[0]<=>b[0] }
> sorted_freq.each do |d|
>    print d[0]*d[1]
> end
> 
> produces >>  bbbbbccaa
> 
> when I was rather hoping for >> bbbbbaacc
> 
Is this what you want?

char_freq = [["c", 2],["b", 5],["a", 2]]
sorted_freq = char_freq.sort_by {|a| [-a[1], a[0]] }
sorted_freq.each do |d|
    print d[0]*d[1]
end