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View Compilation Error

0_0_32701528_21401\Main.java:1: 错误: 需要class, interface或enum
    public static void solution(Collection<Integer> data){
                  ^
0_0_32701528_21401\Main.java:3: 错误: 需要class, interface或enum
        list.sort(Comparator.comparingInt(o -> o));
        ^
0_0_32701528_21401\Main.java:5: 错误: 需要class, interface或enum
        for (int i = 0; i < list.size(); i++) {
        ^
0_0_32701528_21401\Main.java:5: 错误: 需要class, interface或enum
        for (int i = 0; i < list.size(); i++) {
                        ^
0_0_32701528_21401\Main.java:5: 错误: 需要class, interface或enum
        for (int i = 0; i < list.size(); i++) {
                                         ^
0_0_32701528_21401\Main.java:8: 错误: 需要class, interface或enum
            if (i==list.size()-1){
            ^
0_0_32701528_21401\Main.java:10: 错误: 需要class, interface或enum
            }else {
            ^
0_0_32701528_21401\Main.java:12: 错误: 需要class, interface或enum
            }
            ^
0_0_32701528_21401\Main.java:16: 错误: 需要class, interface或enum
    public static void main(String[] args) {
                  ^
0_0_32701528_21401\Main.java:18: 错误: 需要class, interface或enum
        int num = Integer.parseInt(input.nextLine().trim());
        ^
0_0_32701528_21401\Main.java:19: 错误: 需要class, interface或enum
        for (int i = 0; i < num; i++) {
        ^
0_0_32701528_21401\Main.java:19: 错误: 需要class, interface或enum
        for (int i = 0; i < num; i++) {
                        ^
0_0_32701528_21401\Main.java:19: 错误: 需要class, interface或enum
        for (int i = 0; i < num; i++) {
                                 ^
0_0_32701528_21401\Main.java:21: 错误: 需要class, interface或enum
            HashSet<Integer> set = new HashSet<>();
            ^
0_0_32701528_21401\Main.java:23: 错误: 需要class, interface或enum
            for(int j = 0; j < size; j++) {
            ^
0_0_32701528_21401\Main.java:23: 错误: 需要class, interface或enum
            for(int j = 0; j < size; j++) {
                           ^
0_0_32701528_21401\Main.java:23: 错误: 需要class, interface或enum
            for(int j = 0; j < size; j++) {
                                     ^
0_0_32701528_21401\Main.java:25: 错误: 需要class, interface或enum
            }
            ^
0_0_32701528_21401\Main.java:27: 错误: 需要class, interface或enum
        }
        ^
0_0_32701528_21401\Main.java:29: 错误: 需要class, interface或enum
    }
    ^
20 个错误


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