摘要： Given a list, rotate the list to the right by k places, where k is non-negative.For example:Given 1->2->3->4->5->NULL and k = 2,return 4->5->1->2->3->... 阅读全文

摘要： Reverse a linked list from position m to n. Do it in-place and in one-pass. For example: Given 1->2->3->4->5->NULL, m = 2 and n = 4, return 1->4->3->2 阅读全文

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 o... 阅读全文

摘要： Sort a linked list in O(n log n) time using constant space complexity. 法I：快排。快排的难点在于切分序列。从头扫描，碰到>=target的元素，停止；从第二个字串扫描，碰到<=target的元素停止；交换这两个元素。这样的好处是 阅读全文

摘要： Sort a linked list using insertion sort. 阅读全文

摘要： Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example, Given [100, 4, 200, 1, 3, 2], The long 阅读全文

摘要： Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, ... 阅读全文

摘要： Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note:You may assume that nums1 has enough space (size tha... 阅读全文

摘要： 十六进制，十进制，二进制的转换，转换结果放在一个string中首先，十进制转到几进制，就是除以几的余数，先得到的放在低位，直至结果为0其次string转成int：Integer.parseInt(s); 也可以通过string得到char，在通过与'0'相减比较得到intint转成string: S... 阅读全文

摘要： JRE,JVM,JDK的关系。JRE(Java Runtime Environment)java运行环境，我们可以把它看成是一个操作系统。也就是说JRE提供了Java执行的软件平台。JVM (Java Virtual Machine)Java虚拟机。所谓“虚拟机”顾名思义就是模拟出来的东西。JVM就... 阅读全文