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<!--info-header-start--><h1>MyUppercase </h1><blockquote><p>by NaNix <a href="https://github.com/fusheng33" target="_blank">@fusheng33</a></p></blockquote><p><a href="https://tsch.js.org/35991/play" target="_blank"></a> </p><!--info-header-end-->

Implement Uppercase<T>, convert all letter to uppercase

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