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| assertArrayEquals(new int[]{2,1,3,4}, test.solution("{{2},{2,1},{2,1,3},{2,1,3,4}}")); assertArrayEquals(new int[]{2,1,3,4}, test.solution("{{1,2,3},{2,1},{1,2,4,3},{2}}")); assertArrayEquals(new int[]{111,20}, test.solution("{{20,111},{111}}")); assertArrayEquals(new int[]{123}, test.solution("{{123}}")); assertArrayEquals(new int[]{3,2,4,1}, test.solution("{{4,2,3},{3},{2,3,4,1},{2,3}}")); assertArrayEquals(new int[]{3,2,4,1,100}, test.solution("{{4,2,3},{3},{2,3,4,1},{2,3},{2,3,4,1,100}}")); assertArrayEquals(new int[]{3,2,4,1,100}, test.solution("{{4,2,3},{3},{2,3,4,1},{2,3},{2,3,4,1,100}}"));
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