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我想排序多個鍵一個HashMap,在我使用下面的代碼分類收集由多個鍵
Collections.sort(ilv2, new Comparator<HashMap<String,String>>() {
public int compare(HashMap<String, String> arg0, HashMap<String, String> arg1) {
// TODO Auto-generated method stub
Time d1 = Time.valueOf(arg0.get("stamp"));
Time d2 =Time.valueOf(arg1.get("stamp"));
return d1.compareTo(d2);
}
});
釷Hasmap ILV2被時關鍵的「郵票」 sortet,但現在我想的那一刻按鍵res_id(int)排序,然後按時間,如sql語句「order by res_id,stamp」 有什麼建議嗎?
編輯: 解決方案基礎上,給出的答案
Collections.sort(ilv2, new Comparator<HashMap<String,String>>() {
public int compare(HashMap<String, String> arg0, HashMap<String, String> arg1) {
// TODO Auto-generated method stub
int i = 0;
int r1 = Integer.valueOf(arg0.get("resid"));
int r2 = Integer.valueOf(arg1.get("resid"));
i = r1-r2;
if(i==0){
Time d1 = Time.valueOf(arg0.get("stamp"));
Time d2 =Time.valueOf(arg1.get("stamp"));
i = d1.compareTo(d2);
}
return i;
}
});
如果有幫助請標記答案:) – jumper0k
謝謝,我將編輯我的問題併發布基於您的答案的工作代碼^^ – 2red13