package main;import java.util.ArrayList;import java.util.Arrays;import java.util.Collection;import java.util.Collections;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Set;import java.util.TreeSet;import javax.print.attribute.HashAttributeSet;public class 发过的 {    public static void main(String[] args) {        ArrayList
     
       arrayList  =new ArrayList<>();        arrayList.add("sdfsdfs");        arrayList.add("sdwerwerfsdfs");        arrayList.add("werwr");        arrayList.add("we");        arrayList.add("sdfswewdfs");        arrayList.add("werwewrwerwerwrw");        arrayList.add("wwerwerwewesfsdrwrew");                getMinValue(arrayList);        System.out.println("最小Value是：：：：：：：：：：：：："+ getMinValue(arrayList));//        HashMap
      
        hashMap=new  HashMap
       
        ();//        for (String string : arrayList) {//             int len=string.length();//            hashMap.put(string.length(), string);//        }//       //        Iterator
        
         
          > entries = hashMap.entrySet().iterator(); //        while (entries.hasNext()) { //          Map.Entry
          
            entry = entries.next(); // System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue()); // }// // Set
           
             set = hashMap.keySet();// Object[] obj = set.toArray();// Arrays.sort(obj);// System.out.println(obj[0]);// // String resultValue = "";// //根据key ,找Value// for(Map.Entry
            
              str : hashMap.entrySet()){// if(obj[0].equals(str.getKey())){// resultValue = str.getValue();// }// }// System.out.println("最小Value是：：：：：：：：：：：：："+resultValue); } private static String getMinValue( ArrayList
             
               arrayList) { //定义一个map来存截取的数据 HashMap
              
                hashMap=new HashMap
               
                (); for (String string : arrayList) { int len=string.length(); hashMap.put(string.length(), string); } //获取所有的key值 Set
                
                  set = hashMap.keySet(); Object[] obj = set.toArray(); //排序 Arrays.sort(obj); //最小的Value值的变量 String resultValue = ""; //根据key ,找Value for(Map.Entry
                 
                   str : hashMap.entrySet()){ if(obj[0].equals(str.getKey())){ resultValue = str.getValue(); } } return resultValue ; } }