Multisplit: Difference between revisions
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(J: review, clarification, and added missing variable from example) |
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=={{header|J}}== |
=={{header|J}}== |
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{{needs-review|J}} |
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<lang j>multisplit=:4 :0 |
<lang j>multisplit=:4 :0 |
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'sep begin'=.|:t=. y /:~&.:(|."1)@;@(i.@#@[ ,.L:0"0 I.@E.L:0) x |
'sep begin'=.|:t=. y /:~&.:(|."1)@;@(i.@#@[ ,.L:0"0 I.@E.L:0) x |
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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. |
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. |
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Then, loop through the possibilities, skipping over those which |
Then, loop through the possibilities, skipping over those separators which would overlap with previously used separators. |
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Example use: |
Example use: |
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<lang j> S |
<lang j> S=:'a!===b=!=c' |
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S multisplit '==';'!=';'=' |
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┌───┬───┬───┬───┬─┐ |
┌───┬───┬───┬───┬─┐ |
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│a │ │b │ │c│ |
│a │ │b │ │c│ |
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