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Java基础---泛型、集合框架工具类:collections和Arrays
第一讲 泛型(Generic)一、概述1、JDK1.5版本以后出现的新特性。用于解决安全问题,是一个类型安全机制。2、JDK1.5的集合类希望在定义集合时,明确表明你要向集合中装入那种类型的数据,无法加入指定类型以外的数据。3、泛型是提供给javac编译器使用的可以限定集合中的输入类型说明的集合时,...
分类:编程语言   时间:2015-01-15 21:36:03    阅读次数:326
Anagrams
本文是在学习中的总结,欢迎转载但请注明出处:http://blog.csdn.net/pistolove/article/details/42744709 Given an array of strings, return all groups of strings that are anagrams. Note: All inputs will be in lower-case. 思路: (1)如果不知道anagrams的意思,很容易将题意理解错了。最开始...
分类:其他好文   时间:2015-01-15 20:27:31    阅读次数:259
几个开源分词系统所使用标注集的来源
http://www.hankcs.com/nlp/corpus/several-revenue-segmentation-system-used-set-of-source-tagging.html我发现几个民间的分词项目的词典很乱,ansj分词的作者承认arrays.dic是从结巴分词抄过来的,...
分类:其他好文   时间:2015-01-15 12:35:19    阅读次数:280
[java笔记]动态数组
private int count;//计数器private int ary[] = new int [3];if(count >= ary.length){ //数组动态扩展 int newlen = (ary.length*3)/2 + 1; underwears = Arrays...
分类:编程语言   时间:2015-01-14 21:13:17    阅读次数:236
LeetCode88——Merge Sorted Array
题目 Given two sorted integer arrays A and B, merge B into A as one sorted array. Note: You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements ...
分类:其他好文   时间:2015-01-14 16:54:36    阅读次数:183
【leetcode】Median of Two Sorted Arrays(hard)★!!
There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be ...
分类:其他好文   时间:2015-01-14 00:42:38    阅读次数:278
LeetCode--Merge Sorted Array
Given two sorted integer arrays A and B, merge B into A as one sorted array. Note: You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from ...
分类:其他好文   时间:2015-01-13 17:51:17    阅读次数:180
[Leetcode] 4 - Median of Two Sorted Arrays
原题链接:https://oj.leetcode.com/problems/median-of-two-sorted-arrays/ 这是一道比较搞脑子的一道题,细节较多。 1. 这里用到的是findKth的思想,就是如果一共有奇数个元素,假设一共有t个元素,则中间元素为第t / 2 + 1个最大的,如果是偶数,则是t / 2位置和t / 2 + 1位置的平均数。 2. 关于find...
分类:其他好文   时间:2015-01-13 17:41:54    阅读次数:108
(每日算法)LeetCode -- Merge Sorted Array (合并有序数组)
Given two sorted integer arrays A and B, merge B into A as one sorted array. Note: You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from ...
分类:编程语言   时间:2015-01-12 21:01:06    阅读次数:280
leetcode4 Median of two sorted arrays
找到两个已排序数组的中间值,如输入{2,3,5},{4,6},输出4,若输入{2,3,5},{4,6,8},则输出4.5。因为是两个已排序数组,我想到的是用归并排序的思想,排序后数组中间的那个数,或中间两个数的平均数即为所求的median。 {CSDN:CODE:577991}...
分类:其他好文   时间:2015-01-12 16:31:23    阅读次数:186
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