Multisplit: Difference between revisions
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Note: Sub - substring, SepNum - separator number in input list, SepPos - separator position in input string.<br>
Input order of separators is important: they are considered in that order.
=={{header|J}}==
<lang j>multisplit=:4 :0
'sep begin'=.|:t=. y /:~&.:(|."1)@;@(i.@#@[ ,.L:0"0 I.@E.L:0) x
end=. begin + sep { #@>y
last=.next=.0
r=.2 0$0
while.next<#begin do.
r=.r,.(last}.x{.~next{begin);next{t
last=.next{end
next=.1 i.~(begin>next{begin)*.begin>:last
end.
r=.r,.'';~last}.x
)</lang>
Explanation:
First find all potentially relevant separator instances, and sort them in increasing order, by starting location and separator index. <code>sep</code> is separator index, and <code>begin</code> is starting location. <code>end</code> is ending location.
Then, loop through the possibilities, skipping over those which conflict with the currently selected sequence.
Example use:
<lang j> S multisplit '==';'!=';'='
┌───┬───┬───┬───┬─┐
│a │ │b │ │c│
├───┼───┼───┼───┼─┤
│1 1│0 3│2 6│1 7│ │
└───┴───┴───┴───┴─┘
S multisplit '=';'!=';'=='
┌───┬───┬───┬───┬───┬─┐
│a │ │ │b │ │c│
├───┼───┼───┼───┼───┼─┤
│1 1│0 3│0 4│0 6│1 7│ │
└───┴───┴───┴───┴───┴─┘
'X123Y' multisplit '1';'12';'123';'23';'3'
┌───┬───┬─┐
│X │ │Y│
├───┼───┼─┤
│0 1│3 2│ │
└───┴───┴─┘</lang>
=={{header|Python}}==
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