map stream V排序

要对Map的Value进行排序，你可以使用Java 8的Stream API和Comparator。以下是一个示例代码：

import java.util.HashMap;
import java.util.Map;
import java.util.stream.Collectors;

public class MapSortByValue {
    public static void main(String[] args) {
        Map<String, Integer> map = new HashMap<>();
        map.put("A", 1);
        map.put("D", 5);
        map.put("B", 3);
        map.put("E", 6);
        map.put("C", 2);

        // 根据value倒序排序
        Map<String, Integer> sortedMapDesc = map.entrySet().stream()
                .sorted(Map.Entry.<String, Integer>comparingByValue().reversed())
                .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
                        (oldValue, newValue) -> oldValue, HashMap::new));

        // 根据value正序排序
        Map<String, Integer> sortedMapAsc = map.entrySet().stream()
                .sorted(Map.Entry.comparingByValue())
                .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue,
                        (oldValue, newValue) -> oldValue, HashMap::new));

        System.out.println("根据value倒序排序:");
        sortedMapDesc.forEach((key, value) -> System.out.println(key + ": " + value));

        System.out.println("根据value正序排序:");
        sortedMapAsc.forEach((key, value) -> System.out.println(key + ": " + value));
    }
}

这段代码将打印出按照Value倒序排序和正序排序的结果。你可以根据自己的需求进行修改和使用。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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