[Java] AC Solution Using Monotone Queue + Bubble Sort
\nclass Solution {\n    public boolean isTransformable(String s, String t) {\n        int n = s.length();\n        Queue<Integer>[] pos = new Queue[10];\n      
```\nclass Solution {\n    public boolean isTransformable(String s, String t) {\n        int n = s.length();\n        Queue<Integer>[] pos = new Queue[10];\n        for (int i = 0; i < n; i++) {\n            int num = s.charAt(i) - \'0\';\n            if (pos[num] == null) {\n                pos[num] = new LinkedList<>();\n            }\n            pos[num].offer(i);\n        }\n        for (int i = 0; i < n; i++) {\n            int num = t.charAt(i) - \'0\';\n            if (pos[num] == null || pos[num].isEmpty()) {\n                return false;\n            }\n            for (int d = 0; d < num; d++) {\n                if (pos[d] != null && !pos[d].isEmpty() && pos[d].peek() < pos[num].peek()) {\n                    return false;\n                }\n            }\n            pos[num].poll();\n        }\n        return true;\n    }\n}\n```
[]