合并两个list并去重
Listresult = Stream.of(Lists.newArrayList("A", "B", "C"), Lists.newArrayList("A", "B")) .flatMap(Collection::stream).distinct().collect(Collectors.toList());
输出结果是：A, B, C
合并两个list并去重
Listresult = Stream.of(Lists.newArrayList("A", "B", "C"), Lists.newArrayList("A", "B")) .flatMap(Collection::stream).distinct().collect(Collectors.toList());
输出结果是：A, B, C
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