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Problem Path Sum II
Problem Description:Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.Solution: 递归。 1 public List>...
分类:其他好文   时间:2014-07-07 16:59:12    阅读次数:169
Problem Insertion Sort List
Problem Description:Sort a linked list using insertion sort.Solution: 1 public class Solution { 2 public ListNode insertionSortList(ListNode head)...
分类:其他好文   时间:2014-07-07 16:57:55    阅读次数:117
Problem Max Points On a Line
Problem Description:Givennpoints on a 2D plane, find the maximum number of points that lie on the same straight line.Solution: 1 public int maxPoint.....
分类:其他好文   时间:2014-07-07 16:55:19    阅读次数:281
Problem Sort List
Problem Description:Sort a linked list inO(nlogn) time using constant space complexity.Solution: 1 public ListNode sortList(ListNode head) { 2 ...
分类:其他好文   时间:2014-07-07 16:48:00    阅读次数:238
Problem Reverse Worlds in a String
Problem Description:Given an input string, reverse the string word by word.For example,Given s = "the sky is blue",return "blue is sky the".Solution: ...
分类:其他好文   时间:2014-07-07 16:39:19    阅读次数:163
Problem Binary Tree Preorder Traversal
Problem Description:Given a binary tree, return thepreordertraversal of its nodes' values.Solution: 1 public List preorderTraversal(TreeNode root)...
分类:其他好文   时间:2014-07-07 16:34:34    阅读次数:208
Problem Clone Graph
Problem Description:Clone an undirected graph. Each node in the graph contains alabeland a list of itsneighbors.Solution: 1 public UndirectedGraph...
分类:其他好文   时间:2014-07-07 16:11:57    阅读次数:192
Problem Single Number II
Problem Description:Given an array of integers, every element appearsthreetimes except for one. Find that single one.Solution:1 Arrays.sort(A...
分类:其他好文   时间:2014-07-07 16:10:04    阅读次数:174
LeetCode: Binary Tree Preorder Traversal [144]
【题目】 Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it iteratively? 【题意】 非递归返回先序遍历...
分类:其他好文   时间:2014-06-30 06:21:18    阅读次数:334
Set Matrix Zeroes
题目 Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Follow up: Did you use extra space? A straight forward solution using O(mn) space is probab...
分类:其他好文   时间:2014-06-30 06:17:09    阅读次数:245
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