1.js进行排序
var arr=[
{num:3,name:"排序3"},
{num:1,name:"排序1"},
{num:2,name:"排序2"},
{num:4,name:"排序4"},
];
//指定元素排序
function compare(property){
return function(a,b){
var value1 = a[property];
var value2 = b[property];
return value1 - value2;
}
}
//使用方式
arr.sort(compare('num'));
2.用java进行排序
package com;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class Test{
public static void main(String[] args) {
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
Map<String, Object> map1 = new HashMap<String, Object>();
map1.put("num", "3");
map1.put("name", "排序3");
Map<String, Object> map2 = new HashMap<String, Object>();
map2.put("num", "1");
map2.put("name", "排序1");
Map<String, Object> map3 = new HashMap<String, Object>();
map3.put("num", "2");
map3.put("name", "排序2");
Map<String, Object> map4 = new HashMap<String, Object>();
map4.put("num", "4");
map4.put("name", "排序4");
list.add(map1);
list.add(map2);
list.add(map3);
list.add(map4);
//排序前
for (Map<String, Object> map : list) {
System.out.println(map.get("num"));
}
//对list数据进行排序
Collections.sort(list, new Comparator<Map<String, Object>>(){
public int compare(Map<String, Object> o1, Map<String, Object> o2) {
String v1 =(String)o1.get("num");
String v2= (String)o2.get("num");
return v1.compareTo(v2);
}
});
//排序后
System.out.println("-------------------");
for (Map<String, Object> map : list) {
System.out.println(map.get("num"));
}
}
}