Map<String,Map<String,Integer>> result=new ConcurrentHashMap<String,Map<String,Integer>>();
map嵌套map 里面的map根据value排序
//降序
for(String key:result.keySet()){
int count=0;
StringBuffer sb1=new StringBuffer();
Map<String,Integer> map=result.get(key);
List<Map.Entry<String,Integer>> list = new
ArrayList<Map.Entry<String,Integer>>(map.entrySet());
Collections.sort(list, new Comparator<Map.Entry<String, Integer>>() {
public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
return (o2.getValue() - o1.getValue());
}
});
for(int i=0;i<list.size();i++){
Entry<String,Integer> en=list.get(i);
sb1.append(en.getKey()+","+en.getValue()+",");
count+=en.getValue();
}
String str1 = starttime+","+interval+","+key+","+count+","+sb1.toString();
System.out.println(str1.substring(0, str1.lastIndexOf(",")));
}
