java - 如何仅比较前三个字符并删除匹配元素？

Question

我需要将给定 ArrayList 元素中的前三个字符与给定文本进行比较，并删除匹配的日期。

例如，如果给定文本是 "MON"，那么它应该与 daysList 的元素进行比较并删除 "MONDAY" .

我尝试的是

private String[] daysList = { "MONDAY", "TUESDAY", "WEDNESDAY",
    "THURSDAY", "FRIDAY", "SATURDAY", "SUNDAY" };

// It only works if using "MONDAY" instead
private givenString = "MON";

List<String> asSet = new ArrayList<String>(Arrays.asList(daysList));

// It fails here
asSet.remove(givenString);

String[] newDayList = asSet.toArray(new String[]{});

Answer 1

使用Set.removeIf()和 String.startsWith() :

asSet.removeIf(s -> s.startsWith(givenString));