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@b_a_a_d_o

[Android]HashMapからランダムなキーと値を取得する

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メモエントリー。

List<String> keysAsArray = new ArrayList<>(map.keySet());
Random random = new Random();
String key = keysAsArray.get(random.nextInt(keysAsArray.size()));
String value = map.get(key);
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