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Positions of Large Groups In a string S of lowercase letters, these letters form consecutive groups of the same character. For example, a string like 阅读全文
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Saving James Bond - Easy Version This time let us consider the situation in the movie "Live and Let Die" in which James Bond, the world's most famous 阅读全文
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A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes 阅读全文
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An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any 阅读全文