JavaScript で同じ要素が繰り返す配列を作る

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例えば 'AB' が10回繰り返すような配列を作る

Array.apply(null, Array(10)).map(function(){ return 'AB' });

["AB", "AB", "AB", "AB", "AB", "AB", "AB", "AB", "AB", "AB"]

イマイチだなーとは思う。

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C++, C# が本命。それ以外は義理。

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