Knuth's Algorithm X: Difference between revisions

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Rob Zako (talk | contribs)
Add "Implementations" section, correct typo
Rob Zako (talk | contribs)
Example: Clarify moves between levels
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Rows ''A'' and ''B'' each have a 1 in column 1 and thus are selected (nondeterministically).
 
The algorithm moves to the first branch at level 1.
 
: '''Level 1: Select Row ''A'''''
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: Row ''D'' has a 1 in column 5 and thus is selected (nondeterministically).
 
: The algorithm moves to the first branch at level 2.
 
:: '''Level 2: Select Row ''D'''''
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:: Row ''F'' has a 1 in column 2 and thus is selected (nondeterministically).
 
:: The algorithm moves to the first branch at level 3.
 
::: '''Level 3: Select Row ''F'''''