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PAT (Basic Level) Practise:1001. 害死人不偿命的(3n+1)猜想
【题目链接】卡拉兹(Callatz)猜想:对任何一个自然数n,如果它是偶数,那么把它砍掉一半;如果它是奇数,那么把(3n+1)砍掉一半。这样一直反复砍下去,最后一定在某一步得到n=1。卡拉兹在1950年的世界数学家大会上公布了这个猜想,传说当时耶鲁大学师生齐动员,拼命想证明这个貌似很傻很天真的命题,...
分类:其他好文   时间:2014-11-29 14:31:44    阅读次数:178
PAT (Basic Level) Practise:1002. 写出这个数
【题目链接】读入一个自然数n,计算其各位数字之和,用汉语拼音写出和的每一位数字。输入格式:每个测试输入包含1个测试用例,即给出自然数n的值。这里保证n小于10100。输出格式:在一行内输出n的各位数字之和的每一位,拼音数字间有1 空格,但一行中最后一个拼音数字后没有空格。输入样例:123456789...
分类:其他好文   时间:2014-11-29 14:25:20    阅读次数:137
Leetcode-Binary Tree Level Order Traversal
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary tree {3...
分类:其他好文   时间:2014-11-29 07:06:01    阅读次数:191
Leetcode-binary Tree Zigzag Level Order Traversal
Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and ...
分类:其他好文   时间:2014-11-29 06:40:34    阅读次数:167
web css--鼠标滑过显示菜单
无标题文档 一级标题1 二级标题1--> level_ title 1 level_ title 2 level_ title 3 ...
分类:Web程序   时间:2014-11-29 01:28:05    阅读次数:183
Gridview中Datakeys 通过主键取得各列的值。(转)
1. 首先在初始化Gridview时候定义主键的数组。GridViewTeacherStudent.DataKeyNames=new string[] {"courseId","studentId","type","level","unit"};2. 在进行删除操作,或者对某行进行操作获得列中的值。...
分类:其他好文   时间:2014-11-28 16:14:25    阅读次数:122
Level-shifting nixes need for dual power supply
The AD736 true-rms-to-dcconverter is useful for many applications that require precise calculation of the rms value of a waveform. This converter can ...
分类:其他好文   时间:2014-11-28 16:14:22    阅读次数:142
Inverted bipolar transistor doubles as a signal clamp
A number of circuits, such as level detectors and AM demodulators, benefit from a rectifier with a low offset voltage. Silicon diodes have an offset o...
分类:其他好文   时间:2014-11-28 15:50:42    阅读次数:200
leetcode Binary Tree Zigzag Level Order Traversal
给定一个树,按照Z字形记录每一行。例如:Given binary tree{3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7return its zigzag level order traversal as:[ [3], [20,9], ...
分类:其他好文   时间:2014-11-28 14:18:16    阅读次数:131
Cascode MOSFET increases boost regulator's input- and output-voltage ranges
Targeting use in portable-system applications that require raising a battery's voltage to a higher level, IC boost regulators often include output tra...
分类:其他好文   时间:2014-11-28 14:17:55    阅读次数:216
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