TypeScript(JavaScript)でArrayのtranspose(転置・行列入れ替え)をする - Qiita

const table = [ ['www.apple.com', 'www.apple.com'], ['www.amazon.com', 'www.amazon.com', 'www.amazon.com'], ['www.google.com'], ].sort((a, b) => b.length - a.length); table[0] .map((_, idx) => table.map (row => row[idx])); const table = [ ['www.apple.com', 'www.apple.com'], ['www.amazon.com', 'www.amazon.com', 'www.amazon.com'], ['www.google.com'], ].sort((a, b) => b.length - a.length); table[0] .