摘要：
Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x. You should preserve the 阅读全文
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摘要：
Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x. You should preserve the 阅读全文
摘要：
Reverse a linked list from position m to n. Do it in one-pass. Note: 1 ≤ m ≤ n ≤ length of list. Example: 根据经验，先建立一个虚结点dummy node，连上原链表的头结点，这样的话就算头结点变 阅读全文
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Given a linked list, determine if it has a cycle in it. To represent a cycle in the given linked list, we use an integer poswhich represents the posit 阅读全文
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Reverse a singly linked list. Example: Follow up: A linked list can be reversed either iteratively or recursively. Could you implement both? 解法二（C++） 阅读全文
摘要：
AES的C语言实现入门版 AES分组密码算法中明文分组位128bits，密钥分组可以为128,192,256bits。AES也是由最基本的变换单位——“轮”多次迭代而成的。我们将 AES 中的轮变换计为 Round(State, RoundKey)，State 表示消息矩阵；RoundKey 表示轮 阅读全文
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