我们知道：String str = "abcde"; System.out.println(str),将打印出"abcde",这是因为String类重写了toString()方法；但是当： String[] s = new String[]{"a","b","c"}; &nbs
问题：Given a pattern and a string str, find if str follows the same pattern.Here follow means a full match, such that there is a bijection between a letter in pat
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