java对重复数据的处理操作(加上标识区分重复)

import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.HashMap;import java.util.HashSet;import java.util.Iterator;import java.util.Map;import java.util.Set;public class Main {/** * @param args */public static void main(String[] args) {Map map1 = new HashMap();Map<String,Integer> map2 = new HashMap<String,Integer>();//存相同的value出现了几次 Map map3 = new HashMap();map1.put("info0", "info1");map1.put("info1", "info1");map1.put("info2", "info3");map1.put("info3", "info4");map1.put("info4", "info5");map1.put("info5", "info6");Set key = map1.keySet();Iterator it = key.iterator();String[] a = new String[map1.size()];int b = 0;int count = 0;while(it.hasNext()){a[b++] = (String) map1.get(it.next());}for(int i = 0; i < a.length; i++){String str = a[i];for(int j = 0; j < a.length; j++){if(str.equals(a[j])){count++;}}map2.put(str, count);//map里如果key相同 会自动覆盖之前的valuecount = 0;//统计一次归一次0 }Set key1 = map2.keySet();Iterator it1 = key1.iterator();while(it1.hasNext()){String temp = (String) it1.next();int mapCount = (int) map2.get(temp);if(mapCount != 1){for(int i = 1; i <= mapCount; i++){map3.put(temp + "_" + i,temp + "("+i+")" );}}else{map3.put(temp, temp);}}System.out.println(map3);}}