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View Compilation Error

0_0_39721861_17216\Main.java:6: 错误: 需要class, interface或enum
public static void main(String[] args){
              ^
0_0_39721861_17216\Main.java:8: 错误: 需要class, interface或enum
        while(cin.hasNext()){
        ^
0_0_39721861_17216\Main.java:10: 错误: 需要class, interface或enum
            String O1s = cin.next();
            ^
0_0_39721861_17216\Main.java:11: 错误: 需要class, interface或enum
            String O2s = cin.next();
            ^
0_0_39721861_17216\Main.java:12: 错误: 需要class, interface或enum
            char[] O1 = O1s.toCharArray();
            ^
0_0_39721861_17216\Main.java:13: 错误: 需要class, interface或enum
            char[] O2 = O2s.toCharArray();
            ^
0_0_39721861_17216\Main.java:14: 错误: 需要class, interface或enum
            Stack<Character> trainStation = new Stack<>();
            ^
0_0_39721861_17216\Main.java:15: 错误: 需要class, interface或enum
            ArrayList<String> ans = new ArrayList<>();
            ^
0_0_39721861_17216\Main.java:16: 错误: 需要class, interface或enum
            int tar1 = 0;
            ^
0_0_39721861_17216\Main.java:17: 错误: 需要class, interface或enum
            int tar2 = 0;
            ^
0_0_39721861_17216\Main.java:18: 错误: 需要class, interface或enum
            trainStation.push(O1[tar1]);
            ^
0_0_39721861_17216\Main.java:19: 错误: 需要class, interface或enum
            ans.add("in");
            ^
0_0_39721861_17216\Main.java:20: 错误: 需要class, interface或enum
            tar1++;
            ^
0_0_39721861_17216\Main.java:21: 错误: 需要class, interface或enum
            while (tar2 < O2.length){
            ^
0_0_39721861_17216\Main.java:24: 错误: 需要class, interface或enum
                    tar1++;
                    ^
0_0_39721861_17216\Main.java:25: 错误: 需要class, interface或enum
                    ans.add("in");
                    ^
0_0_39721861_17216\Main.java:26: 错误: 需要class, interface或enum
                }
                ^
0_0_39721861_17216\Main.java:29: 错误: 需要class, interface或enum
                    trainStation.pop();
                    ^
0_0_39721861_17216\Main.java:30: 错误: 需要class, interface或enum
                    ans.add("out");
                    ^
0_0_39721861_17216\Main.java:31: 错误: 需要class, interface或enum
                }else {
                ^
0_0_39721861_17216\Main.java:34: 错误: 需要class, interface或enum
                        tar1++;
                        ^
0_0_39721861_17216\Main.java:35: 错误: 需要class, interface或enum
                        ans.add("in");
                        ^
0_0_39721861_17216\Main.java:36: 错误: 需要class, interface或enum
                    }else {
                    ^
0_0_39721861_17216\Main.java:38: 错误: 需要class, interface或enum
                    }
                    ^
0_0_39721861_17216\Main.java:43: 错误: 需要class, interface或enum
                for (int i=0;i<ans.size();i++){
                ^
0_0_39721861_17216\Main.java:43: 错误: 需要class, interface或enum
                for (int i=0;i<ans.size();i++){
                             ^
0_0_39721861_17216\Main.java:43: 错误: 需要class, interface或enum
                for (int i=0;i<ans.size();i++){
                                          ^
0_0_39721861_17216\Main.java:45: 错误: 需要class, interface或enum
                }
                ^
0_0_39721861_17216\Main.java:47: 错误: 需要class, interface或enum
            }else {
            ^
0_0_39721861_17216\Main.java:49: 错误: 需要class, interface或enum
                System.out.println("FINISH");
                ^
0_0_39721861_17216\Main.java:50: 错误: 需要class, interface或enum
            }
            ^
31 个错误


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