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Commit de44d36

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Merge pull request SharingSource#23 from SharingSource/ac_oier
✨feat: Add 752
2 parents aa7b1f0 + f143343 commit de44d36

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‎Index/启发式搜索.md‎

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| 题目 | 题解 | 难度 | 推荐指数 |
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| ------------------------------------------------------------ | ------------------------------------------------------------ | ---- | -------- |
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| [127. 单词接龙](https://leetcode-cn.com/problems/word-ladder/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/word-ladder/solution/gong-shui-san-xie-ru-he-shi-yong-shuang-magjd/) | 困难 | 🤩🤩🤩🤩🤩 |
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| [752. 打开转盘锁](https://leetcode-cn.com/problems/open-the-lock/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/open-the-lock/solution/gong-shui-san-xie-yi-ti-shuang-jie-shuan-wyr9/) | 中等 | 🤩🤩🤩🤩 |
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| [1239. 串联字符串的最大长度](https://leetcode-cn.com/problems/maximum-length-of-a-concatenated-string-with-unique-characters/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/maximum-length-of-a-concatenated-string-with-unique-characters/solution/gong-shui-san-xie-yi-ti-san-jie-jian-zhi-nfeb/) | 中等 | 🤩🤩🤩🤩🤩 |
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| [1723. 完成所有工作的最短时间](https://leetcode-cn.com/problems/find-minimum-time-to-finish-all-jobs/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/find-minimum-time-to-finish-all-jobs/solution/gong-shui-san-xie-yi-ti-shuang-jie-jian-4epdd/) | 困难 | 🤩🤩🤩🤩 |
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‎Index/图论 BFS.md‎

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| 题目 | 题解 | 难度 | 推荐指数 |
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| ------------------------------------------------------------ | ------------------------------------------------------------ | ---- | -------- |
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| [127. 单词接龙](https://leetcode-cn.com/problems/word-ladder/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/word-ladder/solution/gong-shui-san-xie-ru-he-shi-yong-shuang-magjd/) | 困难 | 🤩🤩🤩🤩🤩 |
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| [403. 青蛙过河](https://leetcode-cn.com/problems/frog-jump/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/frog-jump/solution/gong-shui-san-xie-yi-ti-duo-jie-jiang-di-74fw/) | 困难 | 🤩🤩🤩🤩 |
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| [403. 青蛙过河](https://leetcode-cn.com/problems/frog-jump/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/frog-jump/solution/gong-shui-san-xie-yi-ti-duo-jie-jiang-di-74fw/) | 困难 | 🤩🤩🤩🤩🤩 |
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| [752. 打开转盘锁](https://leetcode-cn.com/problems/open-the-lock/) | [LeetCode 题解链接](https://leetcode-cn.com/problems/open-the-lock/solution/gong-shui-san-xie-yi-ti-shuang-jie-shuan-wyr9/) | 中等 | 🤩🤩🤩🤩 |
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‎LeetCode/121-130/127. 单词接龙(困难).md‎

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* m1 和 m2 分别记录两个方向出现的单词是经过多少次转换而来
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* e.g.
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* m1 = {"abc":1} 代表 abc 由 beginWord 替换 1 次字符而来
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* m1 = {"xyz":3} 代表 xyz 由 endWord 替换 3 次字符而来
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* m2 = {"xyz":3} 代表 xyz 由 endWord 替换 3 次字符而来
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*/
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Map<String, Integer> m1 = new HashMap<>(), m2 = new HashMap<>();
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d1.add(s);

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