I don't know how to handle the sort method.

This is a Ruby language question.
The sources are as follows:

x=["abc", "dejgk", "loqp" ]
px.sort {|a,b|a<=>b}#1 Processing
px.sort {|a,b|b<=>a}#2 Processing
# ["abc", "dejgk", "loqp"]
# ["loqp", "dejgk", "abc"]

How does the sort method work with the <=> operator evaluation?
The process I am thinking about is as follows, but it does not match the execution results and
I don't know what to do correctly.

処理 Processing
　"abc" <=> "deigk" Assessment-1 "abc" stored in array [0].Store "deigk" in array [1]
　Store "deigk" <=> "loqp" Assessment-1 "deigk" in array (1).Stored "loqp" in array [2].
　# ["abc", "dejgk", "loqp"]

処理 Processing
　 "deigk" <=> "abc" Assessment 1 "abc" stored in array [1].Stored "deigk" in array [0].
　 Store "loqp" <=>"abc" Assessment 1"abc" in array [2].Stored "loqp" in array [1].　　
　#["deigk", "loqp", "abc"]

As this is the first time I have posted a question, I would appreciate it if you could do something.

That's all.
Thank you for your cooperation.