getKey(), tmpEntry.getValue()); } } return sortedMap; } 根据val排序 代码语言:javascript 代码运行次数:0 运行 AI代码解释 /** * 按值排序(sort by value). * * @param oriMap 要排序的map集合 * @param isAsc(true:升序,false:降序) * @return */ private Map<String, Long> sortMapByValue...
public static Map<String, String> sortMapByValue(Map<String, String> map) { if (map == null || map.isEmpty()) { return null; } Map<String, String> sortedMap = new LinkedHashMap<String, String>(); List<Map.Entry<String, String>> entryList = new ArrayList<Map.Entry<String, String...
TreeMap会根据Key值的自然顺序自动排序。 importjava.util.TreeMap;publicclassTreeMapExample{publicstaticvoidmain(String[]args){TreeMap<String,Integer>treeMap=newTreeMap<>();treeMap.put("Banana",3);treeMap.put("Apple",1);treeMap.put("Orange",2);System.out.println("TreeMap sorted by key:")...
Map<String,Integer>sortedMap=convertListToMap(sortByKeyLength(map));System.out.println("按Key长度排序后的Map: "+sortedMap); 1. 2. 总结 通过上面的步骤,我们已经完成了按Key长度对Map排序的任务。整体来看,代码结构清晰,将功能划分成多个方法,使得维护和阅读更加方便。接下来,你可以尝试使用实际数据来验证...
1.按键排序(sort by key) 直接上代码↓ publicMap<String, String> sortMapByKey(Map<String, String>oriMap) {if(oriMap ==null||oriMap.isEmpty()) {returnnull; } Map<String, String> sortedMap =newTreeMap<String, String>(newComparator<String>() {publicintcompare(String key1, String key2)...
("four", 4); unsortedMap.put("two", 2); Map<String, Integer> sortedMap = sortMapByKeys(unsortedMap); // Print the sorted map for (Map.Entry<String, Integer> entry : sortedMap.entrySet()) { System.out.println(entry.getKey() + ": " + entry.getValue()); } } ...
Map.Entry<String, String> tmpEntry = null; while (iter.hasNext()) { tmpEntry = iter.next(); sortedMap.put(tmpEntry.getKey(), tmpEntry.getValue()); } return sortedMap; } } //比较器类 public class MapValueComparator implements Comparator<Map.Entry<String, String>> { ...
Map<String,String>sortedTreeMap=newTreeMap<>(map);System.out.println(sortedTreeMap);// {key1=value1, key2=value2, key3=value3, key4=value4, key5=value5} Sort Map in descending order You can also initialize aTreeMapby passing a Comparator in the constructornew TreeMap<>(Comparator.re...
Java中SortedMap接口的keySet()方法用于创建一个包含在treemap中的关键元素的集合。它基本上返回一个键的集合视图,或者我们可以创建一个新的集合,并将其中的键元素按升序存储。由于这个集合是由地图支持的,所以对地图的任何改变都会反映在集合中,反之亦然。
.*;publicclassSortMapByKey{publicstaticvoidmain(String[]args){Map<String,Integer>unsortedMap=newHashMap<>();unsortedMap.put("b",2);unsortedMap.put("a",1);unsortedMap.put("c",3);TreeMap<String,Integer>sortedMap=newTreeMap<>(unsortedMap);System.out.println("Sorted Map: "+sortedMap);}...