摘要： Merge k Sorted Lists问题：Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.思路： 归并排序（二分问题）我的代码：public clas... 阅读全文

摘要： Unique Paths II问题：Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle... 阅读全文

摘要： Trapping Rain Water问题：Givennnon-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to... 阅读全文

摘要： Set Matrix Zeroes问题：Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.思路： 用标记数组进行标记我的代码：public class Solution ... 阅读全文

摘要： Search for a Range问题：Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexi... 阅读全文

摘要： Sort List问题：Sort a linked list inO(nlogn) time using constant space complexity.思路： 归并排序我的代码：public class Solution { public ListNode sortList(ListN... 阅读全文

摘要： Intersection of Two Linked Lists问题：Write a program to find the node at which the intersection of two singly linked lists begins.思路： 追击问题我的代码：public c... 阅读全文

摘要： Length of Last Word问题：Given a stringsconsists of upper/lower-case alphabets and empty space characters' ', return the length of last word in the strin... 阅读全文

摘要： Longest Consecutive Sequence问题：Given an unsorted array of integers, find the length of the longest consecutive elements sequence.思路： HashSet进行存储我的代码：... 阅读全文

摘要： Reorder List问题：Given a singly linked listL: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