我正在编写一个试图获得最高百分比类别的程序(其中这些类别存储在Entry对象中)。我现在要做的是将所有类别百分比最高,因为它是可以occur.So问题的条件是:“我如何存储这些类别比例最高值?”这是我的代码看起来像至今:从条目对象中获取最高百分比值Java
double biggestPercentage = 0;
String biggestPercentageCategory = null;
ArrayList<String> biggestPercentageCategories = new ArrayList<String>();
double percentage = 0;
System.out.println("\n");
System.out.println("Get user's most interested category:");
for(int i=0;i<entrySet.size();i++){
allEntries = entrySet.get(i);
if(allEntries.getValue() != 0){
double calculatePercentage = allEntries.getValue();
percentage = Double.parseDouble(df.format((calculatePercentage*100)/totalNumberOfContentForEachUser1));
System.out.println("Percentage of " + allEntries.getKey() + ": " + percentage +"%");
if(percentage > biggestPercentage){
biggestPercentage = percentage;
biggestPercentageCategory = allEntries.getKey();
}
}
if(percentage == biggestPercentage){
biggestPercentageCategories.add(allEntries.getKey());
}
}
HashMap<String,String> hashmap = new HashMap();
if(percentage > biggestPercentage){
hashmap.put(userName, biggestPercentageCategory);
}
else if(percentage == biggestPercentage){
hashmap.put(userName, biggestPercentageCategories.toString());
}
for(Entry<String, String> str : hashmap.entrySet()){
System.out.println("\n");
System.out.println(str);
}
输出看起来是这样的:
获取用户最感兴趣的类别:
Percentage of Entertainment_Culture: 12.5%
Percentage of War_Conflict: 12.5%
Percentage of Sports: 25.0%
Percentage of Hospitality_Recreation: 12.5%
Percentage of Human Interest: 12.5%<br>
Percentage of Education: 25.0%
dryice1993=[Entertainment_Culture, War_Conflict, Sports, Education]
其中'dryice1993'只是该用户的用户名。
但预期输出我想要的是:
dryice1993=[Sports, Education]?
您可能想要使用排序 –
您可以这样做1)对收集进行排序2)找到第一个条目的百分比3)找到所有条目具有相同最大百分比 –