Ptt 大爆卦 | Java List join - 前往 https://codereview.stackexchange.com/questions/183121/java8-stream-filter-map-and-joining-with-an-alternative-result-if-the-stream-i

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並前往https://codereview.stackexchange.com/questions/183121/java8-stream-filter-map-and-joining-with-an-alternative-result-if-the-stream-i

Java8: Stream filter, map and joining with an alternative result ...

if the list is empty it should be a dash -. My current implementation is: private static String doIt(List<Integer> list) ...

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