统计数字出现次数

[又贪又菜小崔西'-']

JAVA题，要求任意输入20个10以内的整数，并判断输出每个数字的出现次数并输出

[wj振藩]

public static void main(String[] args) {
        HashMap<Integer,Integer> map = new HashMap<>();
        Scanner in = new Scanner(System.in);
        for(int i=0;i<20;i++){
            int a = in.nextInt();
            if(map.containsKey(a)){
                map.put(a,map.get(a)+1);
            }else{
                map.put(a,1);
            }
        }
        for (HashMap.Entry<Integer, Integer> entry : map.entrySet()) {
            System.out.println(entry.getKey() + " 出现了 " + entry.getValue() + "次");
        }
    }

[「已注销」]

引用一楼的代码
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public static void main(String[] args) {
        HashMap<Integer,Integer> map = new HashMap<>();
        Scanner in = new Scanner(System.in);
        for(int i=0;i<20;i++){
            String a = in.nextLine();
            int i = Integer.parseInt(a);
            if((i>=0)&&(i<=10)){
               
            
            if(map.containsKey(a)){
                map.put(a,map.get(a)+1);
            }else{
                map.put(a,1);
            }
          }else{
                continue;
          }
        }
        for (HashMap.Entry<Integer, Integer> entry : map.entrySet()) {
            System.out.println(entry.getKey() + " 出现了 " + entry.getValue() + "次");
        }
    }