06 2017 档案

Longest Palindromic Substring Leetcode
摘要：Given a string s, find the longest palindromic substring in s. You may assume that the maximum length of s is 1000. Example: Input: "babad" Output: "b 阅读全文
posted @ 2017-06-20 05:33 璨璨要好好学习 阅读(140) 评论(0) 推荐(0)
Nim Game Leetcode
摘要：You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 ston 阅读全文
posted @ 2017-06-16 03:36 璨璨要好好学习 阅读(170) 评论(0) 推荐(0)
Implement strStr() Leetcode
摘要：Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 真是要崩溃了。。。这道题好像是第三遍做了还是做不 阅读全文
posted @ 2017-06-16 02:24 璨璨要好好学习 阅读(324) 评论(0) 推荐(0)
Balanced Binary Tree Leetcode
摘要：Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the dept 阅读全文
posted @ 2017-06-11 23:30 璨璨要好好学习 阅读(132) 评论(0) 推荐(0)
First Unique Character in a String
摘要：Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. 阅读全文
posted @ 2017-06-11 04:12 璨璨要好好学习 阅读(177) 评论(0) 推荐(0)
Island Perimeter Leetcode
摘要：You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water. Grid cells are connected horizontally/ve 阅读全文
posted @ 2017-06-11 03:41 璨璨要好好学习 阅读(180) 评论(0) 推荐(0)
Contains Duplicate II Leetcode
摘要：Given an array of integers and an integer k, find out whether there are two distinct indices i and j in the array such that nums[i] = nums[j]and the a 阅读全文
posted @ 2017-06-08 03:46 璨璨要好好学习 阅读(121) 评论(0) 推荐(0)
Palindrome Linked List Leetcode
摘要：Given a singly linked list, determine if it is a palindrome. Follow up:Could you do it in O(n) time and O(1) space? 这个follow up要求O(n)的时间和O(1)的空间，可以先re 阅读全文
posted @ 2017-06-07 22:05 璨璨要好好学习 阅读(140) 评论(0) 推荐(0)
Merge Sorted Array Leetcode Java and C++
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
posted @ 2017-06-06 03:38 璨璨要好好学习 阅读(153) 评论(0) 推荐(0)
Pascal's Triangle Leetcode Java and C++
摘要：Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] 阅读全文
posted @ 2017-06-05 05:21 璨璨要好好学习 阅读(157) 评论(0) 推荐(0)
Reverse Linked List Leetcode
摘要：真的是太久太久没有刷题了。。。。那天阿里面到这么简单的题目发现自己都写不利索了。。。哭瞎。。。 Reverse a singly linked list. 可以用递归和非递归的方法。 递归： 主要思想是定义一个nextNode，用nextNode作为尾部直接连前面一个。 非递归： C++做法，虽然现 阅读全文
posted @ 2017-06-05 03:43 璨璨要好好学习 阅读(160) 评论(0) 推荐(0)
Intersection of Two Linked Lists
摘要：Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin to in 阅读全文
posted @ 2017-06-04 05:28 璨璨要好好学习 阅读(147) 评论(0) 推荐(0)