Javascript one-liner. The cutoff can be changed.
let summarizeNamesAtNumNames = 4; const likes = (names) => [ names.length === 0 ? "no one" : names .slice(0, summarizeNamesAtNumNames - 1) .reduce( (acc, name, index) => acc + (index === 0 ? "" : index === Math.min(names.length - 1, summarizeNamesAtNumNames - 2) ? " and " : ", ") + (names.length >= summarizeNamesAtNumNames && index === summarizeNamesAtNumNames - 2 ? names.length - (summarizeNamesAtNumNames - 2) + " others" : name), "" ), "like" + (names.length <= 1 ? "s" : ""), "this", ].join(" "); for (let cut = 2; cut < 7; cut++) { summarizeNamesAtNumNames = cut; console.log(likes([])); console.log(likes(["Peter"])); console.log(likes(["Jacob", "Alex"])); console.log(likes(["Max", "John", "Mark"])); console.log(likes(["Alex", "Jacob", "Mark", "Max"])); console.log(likes(["Alex", "Jacob", "Mark", "Max", "Joey", "Joe Joe"])); console.log( likes(["Alex", "Jacob", "Mark", "Max", "Joey", "Joe Joe", "Shabadoo"]) ); }
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Javascript one-liner.
The cutoff can be changed.