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Question: Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 阅读全文
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在慕课上学习了一个关于java注解的课程，下面是笔记以及一些源码。 Annotation——注解 1.JDK中的注解 JDK中包括下面三种注解： @Override：标记注解(marker annotation)，重写，父类写的方法，如果子类继承了父类，就要重写父类的方法。 @Deprecated： 阅读全文
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Question： Divide two integers without using multiplication, division and mod operator. If it is overflow, return MAX_INT. Divide two integers without 阅读全文
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Question： Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. Th 阅读全文
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Question: Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. k is a positive integer and is less than o 阅读全文
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Question: Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. Tips: 将k个有序的链表合并成为一个有序链表。 思路： 这个题目是将两个链表合 阅读全文
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Question： Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-bal 阅读全文
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Question： Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note: Do not modify the linked list. Tips： 给 阅读全文
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Question： Given a singly linked list L: L0→L1→…→Ln-1→Ln, reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→… You must do this in-place without altering the nodes' 阅读全文
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Question： Sort a linked list using insertion sort. Tips： 使用插入排序，对一个链表进行排序。 思路： 新建一个头结点newHead，设置一个pre指针，指向newHead。 cur指针，指向原来的头结点head。 当pre.next的值大于cu 阅读全文