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//
// Call as "node ch-1.js < ../t/input-1-X", for suitable X.
//
require ("fs")
. readFileSync (0) // Read all.
. toString () // Turn it into a string.
. split ("\n") // Split on newlines.
. filter (_ => _ . length) // Filter out empty lines.
//
// Split each line on ', ', and remove the double quotes.
// We now have a list of words.
//
. map (_ => _ . split (/,\s*/)
. map (_ => _ . replace (/"/g, ''))
)
//
// Iterate over the list of words, find the canonical representation
// of each word (characters sorted), and store the words in a hash,
// keyed by their canonical representation.
//
. map (_ => _ . reduce ((hash, word) => {
let key = word . split ("")
. sort ()
. join ("");
hash [key] = hash [key] || [];
hash [key] . push (word);
return (hash);
}, {})
)
//
// Print the results: sorted by key, the words in the order
// of the input. Each word will be surrounded by double quotes
// and separated by commas.
//
. map (hash => Object . keys (hash)
. sort ()
. forEach (_ => {
console . log (
hash [_] . map (_ => '"' + _ + '"')
. join (", ")
)
})
)
;
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