// Time Complexity: O(n²) (due to substring creation and window reset) } else if (right == s.length() - 1 && !(map.containsKey(s.substring(left, right + 1)))) { map ...

第二个方法，是Code Granker上面的，利用了高中学排列组合时候的概念。 有个‘abc’，那么总共可以看成'a_b_c' 5个字符位置 ...

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Abstract: We present a simple grammar-based compression strategy derived from the factorization used in the DC3 suffix-sorting algorithm that supports fast substring ...

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JDK 26 moves to general production availability. This short-term release is backed by six months of Premier-level support. Java Development Kit (JDK) 26, the latest standard Java release from Oracle, ...