java8 stream 操作map根据key或者value排序的实现

Map<String,BigDecimal> map =new HashMap<>();
map.put("one", 0.08);
map.put("two", 0.1);
map.put("three", 0.2);
map.put("four", 0.91);

  public <K, V extends Comparable<? super V>> Map<K, V> sortByValue(Map<K, V> map) {
    Map<K, V> result = new LinkedHashMap<>();
 
    map.entrySet().stream()
        .sorted(Map.Entry.<K, V>comparingByValue()
            .reversed()).forEachOrdered(e -> result.put(e.getKey(), e.getValue()));
    return result;
  }

 public <K extends Comparable<? super K>, V > Map<K, V> sortByKey(Map<K, V> map) {
    Map<K, V> result = new LinkedHashMap<>();
 
    map.entrySet().stream()
        .sorted(Map.Entry.<K, V>comparingByKey()
            .reversed()).forEachOrdered(e -> result.put(e.getKey(), e.getValue()));
    return result;
  }

 public <K, V extends Comparable<? super V>> Map<K, V> sortByValue(Map<K, V> map) {
    Map<K, V> result = new LinkedHashMap<>();
 
    map.entrySet().stream()
        .sorted(Map.Entry.<K, V>comparingByValue()
            ).forEachOrdered(e -> result.put(e.getKey(), e.getValue()));
    return result;
  }