HashMap排序问题详解编程语言

public static TreeMap String, Float sortFloatDESC(HashMap String, Float map) { ValueComparatorDesc valComp = new ValueComparatorDesc(map); TreeMap String, Float sortedMap = new TreeMap String, Float (valComp); sortedMap.putAll(map); return sortedMap; /** * @Function 升序排 * */ public static TreeMap String, Float sortFloatASC(HashMap String, Float map) { ValueComparatorAsc valComp = new ValueComparatorAsc(map); TreeMap String, Float sortedMap = new TreeMap String, Float (valComp); sortedMap.putAll(map); return sortedMap; public static void main(String[] args){ HashMap String, Float map = new HashMap String,Float map.put("A", (float) 0.9999); map.put("B", (float) 0.111); map.put("C", (float) 1.9090); map.put("D", (float) 0.2); CustomSort sf = new CustomSort(); System.out.println(sf.sortFloatDESC(map));
public static Integer[] getMaxCNumber(Integer[] array){ ArrayList Integer maxArrays = new ArrayList Integer ArrayList Integer nowArrays = new ArrayList Integer // {0, 1, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23}; int max = array[0] - 1; for (int i = 0; i array.length; i++) { // System.out.println("array[i]: "+array[i] + " ; max+1: "+(max+1)); if (array[i] != max + 1) { max = array[i] - 1; // System.out.println("--------------------------------,max="+(array[i] - 1) + " ;array[i]="+array[i]); nowArrays.clear(); nowArrays.add(array[i]); max = array[i]; if (nowArrays.size() = maxArrays.size()) { // maxArrays=nowArrays;这种情况是吧nowdays的地址赋值给了maxarrays的地址，这样以后只要nowarrays的地址改变，maxarrays的值也会改变 maxArrays = (ArrayList Integer ) nowArrays.clone(); // System.out.println("nowArrays: "+nowArrays.toString()); // System.out.println("maxArrays: "+maxArrays.toString()); return (Integer[]) maxArrays.toArray(new Integer[] {}); * @Function 降序排，从大到小 * */ class ValueComparatorDesc implements Comparator String { Map String, Float mapFloat; // 这里需要将要比较的map集合传进来 public ValueComparatorDesc(Map String, Float mapFloat) { this.mapFloat = mapFloat; public int compare(String a, String b) { if (mapFloat.get(a) = mapFloat.get(b)) { return -1; } else { return 1; * @Function 升序排，从小到大 * */ class ValueComparatorAsc implements Comparator String { Map String, Float mapFloat; // 这里需要将要比较的map集合传进来 public ValueComparatorAsc(Map String, Float mapFloat) { this.mapFloat = mapFloat; public int compare(String a, String b) { if (mapFloat.get(a) = mapFloat.get(b)) { return -1; } else { return 1;

原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/17858.html

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