Mapから配列をつくるコードでバグ | Codetter（こーどったー）

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int size = map.size();
String[] keys = new String[size];
String[] vals = new String[size];
int i = 0;
for(Map.Entry<String, String> e : map.entrySet()) {
  keys[i++] = e.getKey();
  vals[i++] = e.getValue();
}
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