M7
发帖数: 219 | 1 这里有两个shuffle方法。第一个通过排序（乱序），第二个是标准的Fisher-Yates
shuffle, which has linear performance.
public static IEnumerable Shuffle(this IEnumerable
collection)
{
Random random = new Random();
return collection.OrderBy(item => random.Next());
}
public static IEnumerable FastShuffle(this IEnumerable
collection)
{
T[] buffer = collection.ToArray();
Random random = new Random();
for (int i = 0;... 阅读全帖 |
|
c*********n
发帖数: 128 | 2 一个月前买的第二代shuffle，我的电脑是pc(Compaq turion64)+ XP pro + 最新的
iTune
第一次接shuffle到电脑上的时候顺利的import歌进去了，但后来死活就是不能replace
里面的歌了，好像那些歌fix在里面了，每次报错说
The iPod cannot be read from or written to
试图用iTune的restore功能，也失败了
然后打电话给客服，让我下载一个叫做iPodResetUtility的软件来reset我的shuffle，
照做了，这个软件确实将我的shuffle 给reset了，但是再接到电脑上，还是不能
import mp3进去，报错信息相同。
以为是shuffle坏了，拿到店里给检查，发现给format成了MS-DOS的文件系统，工作人
员给format成FAT32再接到店里的Mac本本上发现能用，可是接到我的笔记本上还是不行。
然后找了个好的shuffle接到我的本本上，发现报同样的错误。
请问有人遇到过这个问题么？怎么解决呢？ |
|
t*d
发帖数: 1290 | 3 俺不是科班的，随便说说。
如果你的两组数据符合回归需要的条件，比如参差正态分布，那么就不需要shuffle。
如果不是很肯定，就 shuffle 一下吧。用 shuffle 没有那么多稀奇古怪的要求。
一个小窍门，如果 shuffle 后的pvalue 没有达到显著，但是很靠近了（比如0.
055），就再shuffle 一次。一般多shuffle了几次，总有一次能达到显著的。 |
|
I**********s
发帖数: 34 | 4 http://en.wikipedia.org/wiki/Shuffling
"Shuffling algorithms
In a computer, shuffling is equivalent to generating a random permutation of
the cards. There are two basic
algorithms for doing this, both popularized by Donald Knuth.
The first is simply to assign a random number to each card, and then to sort
the cards in order of their random
numbers. This will generate a random permutation, unless any of the random
numbers generated are the
same as any others (i.e. pairs, triplets etc). This can b... 阅读全帖 |
|
b******7
发帖数: 92 | 5 不能先分段shuffle，再shuffle段id，这样不均匀。比如考虑数组为aaaaabcdef，若按
照这个思路，则无论怎么shuffle，这5个a都会在一起。
我的考虑和racolas一样，先将N个元素shuffle到M个文件中，再在M个文件内shuffle，
最后合并。
定义每个文件当前可容纳元素个数r[i],i=0...M-1,初始时所有r[i]都为N/M
从磁盘上读取N个元素，设当前为第k个元素，则根据rand[1,N-k]落入{r[0],r[0]+r[1]
,r[0]+r[1]+r[2],...}中的哪一个决定第k个元素写入哪个文件，并且相应的文件可容
纳个数减1。 |
|
b********t
发帖数: 992 | 6
http://www.modernsky.com/shuffle.htm
iPod即将推出摩登天空版Modern Sky iPod Shuffle 全球仅限量1231台
最酷的IT品牌和最酷的唱片品牌在一起会发生什么？
今年7月底,全球最著名、最有个性的数字音乐播放器品牌iPod将推出以中国唱片公司品牌
"摩登天空"为命名iPod Shuffle系列--Modern Sky iPod Shuffle Special Edition,这是
iPod继在日本推出限量版的机器猫(Doraemon)、凯蒂猫(Hello Kitty)后的又一限量版举
措。中国最重要的新音乐唱片厂牌"摩登天空"以其创造性音乐态度和生活品位成为此次合
作的最佳人选。
第一款的iPod于2001年10月正式问世,立刻吸引了世界的眼球,它的出现不仅带来音乐产业
的革命,它的造型也成为了工业设计中的经典之作。 "Modern Sky iPod Shuffle Special
Edition"的特别版中,摩登天空用特有的幽默感来诠释"7"这个概念:针对现代人习惯用"
一周7天" 来安排日常工作和学习的生活方式,摩登天空 |
|
m*p
发帖数: 1331 | 7 【 以下文字转载自 JobHunting 讨论区 】
发信人: mbp (Mac Book Pro), 信区: JobHunting
标 题: java: use vector to shuffle a deck of Card 问题
发信站: BBS 未名空间站 (Thu Mar 3 00:40:48 2011, 美东)
要求用vector实现shuffle a deck of Card,如下：
public class Card {
private int value;
Card(int v) {
value = v;
}
public void print(){
System.out.print(value+";");
}
}
public class DeckShuffle {
private final int num;
Vector deck = new Vector();
// implement this s... 阅读全帖 |
|
m*p
发帖数: 1331 | 8 【 以下文字转载自 JobHunting 讨论区 】
发信人: mbp (Mac Book Pro), 信区: JobHunting
标 题: java: use vector to shuffle a deck of Card 问题
发信站: BBS 未名空间站 (Thu Mar 3 00:40:48 2011, 美东)
要求用vector实现shuffle a deck of Card,如下：
public class Card {
private int value;
Card(int v) {
value = v;
}
public void print(){
System.out.print(value+";");
}
}
public class DeckShuffle {
private final int num;
Vector deck = new Vector();
// implement this s... 阅读全帖 |
|
m*p
发帖数: 1331 | 9 要求用vector实现shuffle a deck of Card,如下：
public class Card {
private int value;
Card(int v) {
value = v;
}
public void print(){
System.out.print(value+";");
}
}
public class DeckShuffle {
private final int num;
Vector deck = new Vector();
// implement this shuffle function. DO NOT USE Collections.shuffle() !!
public void shuffle(){
// your code goes here!
}
} |
|
I****8
发帖数: 5829 | 10 我想要的物品:
ipod nano , shuffle , latest generation
单张面值:
ipod nano 8GB or 16GB latest generation
ipod shuffle 2GB, latest generation
可接受的价格(必须明码标价！):
ipod nano 8GB latest generation 大于4个105,+MY LABEL
shuffle 2GB, latest generation 大于4个 30+MY LABEL
物品新旧要求:
新. SEALED
邮寄方式要求:
买卖双方谁承担邮寄损失(Required if not code only):
付款方式说明:
其他补充说明:
广告的有效期:
物品来源:
我的联系方式:
二手交易风险自负！请自行验证是否合法和一手卡！: |
|
B********t
发帖数: 147 | 11 下面是wiki上的两个实现。第一个是直接shuffle，第二个是取a.length个数且数据源
源不断的进来。链接：http://en.wikipedia.org/wiki/Fisher-Yates_shuffle
To initialize an array a of n elements to a randomly shuffled copy of source
, both 0-based:
a[0] ← source[0]
for i from 1 to n − 1 do
j ← random integer with 0 ≤ j ≤ i
a[i] ← a[j] //这里是不是应该是当 j < i时 a[i] = a[j] a[j] = source[i]
a[j] ← source[i] //这里是当 j == i时
To initialize an empty array a to a randomly shuffled copy of source whose
length is not known:
whil... 阅读全帖 |
|
T******g
发帖数: 21328 | 12 http://venturehacks.com/articles/option-pool-shuffle
Advice for entrepreneurs.
Disclaimer: This is not legal advice.
* Archives
* Twitter: @venturehacks
* About Us
* RSS
Venture Hacks header image 2
The Option Pool Shuffle
April 10th, 2007
“Follow the money card!”
– The Inside Man, Three-Card Shuffle
Summary: Don’t let your investors determine the size of the option pool for
you. Use a hiring plan to justify a small option pool, increase your share
price, and increase your effect |
|
t*******o
发帖数: 1124 | 13 听说3代 shuffle 只有通过耳机上的按钮控制。如果耳机坏了，必须买苹果的耳机，多
少钱一个啊？
2代shuffle跟3代比，有哪些优点缺点。我主要用于运动的时候听音乐。想搞的小巧，好控制的。所以选择shuffle
另外，2代和3代，在哪里买最便宜？ 2代apple store已经不卖了？ |
|
s******s
发帖数: 25 | 14 【 以下文字转载自 shopping 讨论区 】
发信人: sexrocks (DealsLava), 信区: shopping
标 题: ooma 老版+ ipod shuffle 4gb $203! HOT
发信站: BBS 未名空间站 (Thu Oct 29 12:36:15 2009, 美东)
http://www.amazon.com/gp/feature.html?
ie=UTF8&ref_=amb_link_85829851_3&tag=slickdeals&docId=1000441361
Click here to add ooma Core VoIP phone system with No monthly Phone Bill
to cart
Click here to add 4GB Ipod Shuffle Newest 4th Generation to cart
Check out , you'll get Ipod 4GB shuffle for FREE and free shipping |
|
c********l
发帖数: 8138 | 15 【 以下文字转载自 JobHunting 讨论区 】
发信人: coupondeal (Coupon Deal), 信区: JobHunting
标 题: 求问一道数组shuffle的问题
发信站: BBS 未名空间站 (Sun Mar 17 21:46:36 2013, 美东)
数组shuffle，经典的Fisher and Yates的算法是
public static void shuffle(List list, Random rnd) {
int size = list.size();
for (int i=size; i>1; i--)
swap(list, i-1, rnd.nextInt(i));
}
}
如果将
swap(list, i-1, rnd.nextInt(i));
改成
swap(list, i-1, rnd.nextInt(N));
会出错。
具体出错的原因是什么？怎么描述这种现象？ |
|
w*******y
发帖数: 60932 | 16 2 Free Kindle Games for your Kindle - Every Word and Shuffled Row!
If you like Scrabble, you may like Shuffled Row & if you like word scrambles
, then you will like Every Word! : ) This is kind of nice if you want to
have a little break from reading!
**Not sure, but these may only work on the Kindle 2s, and not the Generation
1 Kindles : (
Every Word LINKY:
http://www.amazon.com/Every-Word/dp/B003P37FW0/ref=cm_lmf_tit_1
Shuffled Row LINKY
Every Word Information:
If you like word scrambles then |
|
|
s******f
发帖数: 3984 | 18 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
[出售]ipod touch 8G [$188] and ipod shuffle 2G
单张面值:
可接受价格(必须明码标价！):
1 iPod touch 8GB (latest generation) $188 from MA
1 iPod shuffle 2GB (latest generation) $32 from MA
u can pm ur price
物品新旧要求:
brand new in seal
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
before me after you
付款方式说明:
Bill pay, BOA transfer, paypal
其他补充说明:
广告的有效期:
till gone
物品来源(Required for All Cards!):
Target
我的联系方式:
pm
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip:
MA |
|
t*********u
发帖数: 26311 | 19 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
ipod shuffle and nano, one each, latest gen
单张面值:
可接受价格(必须明码标价！):
150 for both
物品新旧要求:
new sealed
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
付款方式说明:
boa
其他补充说明:
iPod shuffle 4th gen 2gb green mc750ll/a
ipod nano 6th gen 8gb pink mc692ll/a
广告的有效期:
物品来源(Required for All Cards!):
我的联系方式:
bbs mail
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
|
s******f
发帖数: 3984 | 20 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
[出售]ipod touch 8G [$188] and ipod shuffle 2G
单张面值:
可接受价格(必须明码标价！):
1 iPod touch 8GB (latest generation) $188 from MA
1 iPod shuffle 2GB (latest generation) $32 from MA
u can pm ur price
物品新旧要求:
brand new in seal
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
before me after you
付款方式说明:
Bill pay, BOA transfer, paypal
其他补充说明:
广告的有效期:
till gone
物品来源(Required for All Cards!):
Target
我的联系方式:
pm
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip:
MA |
|
t*********u
发帖数: 26311 | 21 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
ipod shuffle and nano, one each, latest gen
单张面值:
可接受价格(必须明码标价！):
150 for both
物品新旧要求:
new sealed
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
付款方式说明:
boa
其他补充说明:
iPod shuffle 4th gen 2gb green mc750ll/a
ipod nano 6th gen 8gb pink mc692ll/a
广告的有效期:
物品来源(Required for All Cards!):
我的联系方式:
bbs mail
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
|
H*****r
发帖数: 764 | 22 别人给了个ipod shuffle， 最烦那个itune
有没有办法hack ipod shuffle,直接copy & paste曲子，和按照folder播放?
thanks! |
|
m******9
发帖数: 968 | 23 Design a Card Deck,并且写shuffle function，
我之前的一次onsite，class写的不周全，当时shuffle也没写出来，直接因为这个而
fail掉了，后来的面试又被问到过2次。
把它贴出来，我也搜了一个答案出来，不知是否很好，大家讨论一下，有没有更好的解
决方法。
enum Suit { SPADES, CLUBS, HEARTS, DIAMONDS, };
enum Face { ACE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACK,
QUEEN, KING, };
class Card {
public:
Card(Suit suit, Face face) : suit(suit), face(face) {}
Card(const Card& orig) : suit(orig.suit), face(orig.face) {}
Suit getSuit() const { return suit; }
Face getFace() const { return fa |
|
m*****f
发帖数: 1243 | 24 My shuffle
void Shuffle() {
int n = "size of the deck";
for (int i = n-1; i >= 0; - -i) {
swap(card[i], card[bigrand() % (n- -)]);
}
} |
|
E********a
发帖数: 124 | 25
you are talking about perfect shuffling, like A1A2A3B1B2B3 <-> A1B1A2B2A3B3
I guess lz talked about random shuffling |
|
G**7
发帖数: 391 | 26 To keep my status, I have to go back to school. I am not a computer major.
However, one of the classes I am taking is Java. The professor asks us to
write a program to shuffle a deck of cards.
Can anyone tell me the Java code for shuffling a deck of cards? or tell
me where to find such websites or solutions? I have done numerous internet
solutions, but didn't find any codes working.
Would appreciate if anyone can help. You can also send emails to me. |
|
a********0
发帖数: 30 | 27 如何考虑随机SHUFFLE？伪随机数如何产生？当然真正的随机是无法产生的。MS的一个
阿三问：如何SHUFFLE又同时保证绝对的均匀的随机分布？我真怀疑他除了难为别人，
可能压根一些基本的概率统计随机样本的知识也不懂，如中心极限，置信，HIDDEN
MARKOV。
没办法，CS／MATH学的烂的还整天牛逼轰轰面世人，不怎么编程的还整天考别人。在公
司／学校里干几年都知道，如果每天认真写程序的／做RESEARCH的，谁有心思整天琢磨
这些考试。这些MS变态阿三，有本事写STOC／FOCS／SIGMOD／MOBIHOC／KDD／AAAI／
CVPR的PAPER，或者拿个MIT的AP，老子绝对服。 |
|
s****e
发帖数: 638 | 28 下面这个是O(n) 不知道这样做行不行。
#include
#include
#include
using namespace std;
void shuffle(char* A)
{
int size = strlen(A);
int i=1;
while(i
if (A[i] & 0x80) {
i++;
continue;
}
int j=i;
int j2;
while(true){
if ( j < size/2 ) j2 = j*2;
else j2 = 2*(j-size/2)+1;
if (j2<=i) break;
swap(A[i], A[j2]);
A[j2] |= 0x80;
j=j2;
}
i++;
}
for (int i=0; i
}
int ... 阅读全帖 |
|
c********l
发帖数: 8138 | 29 数组shuffle，经典的Fisher and Yates的算法是
public static void shuffle(List list, Random rnd) {
int size = list.size();
for (int i=size; i>1; i--)
swap(list, i-1, rnd.nextInt(i));
}
}
如果将
swap(list, i-1, rnd.nextInt(i));
改成
swap(list, i-1, rnd.nextInt(N));
会出错。
具体出错的原因是什么？怎么描述这种现象？ |
|
c****9
发帖数: 164 | 30 分段shuffle，然后shuffle id段 |
|
j******2
发帖数: 362 | 31 "shuffle id段"，是说组与组shuffle吗？这样不均匀吧？ |
|
j******2
发帖数: 362 | 32 大概可以这样：
分n段shuffle后存到n个小文件里，每个文件里m个数。然后generate m次shuffle了的1
到n，再m次读不同文件里的头，写回原大文件。 |
|
n******e
发帖数: 957 | 33 可不可以像external sort那样，每次shuffle一下每个chunk的头？然后下次shuffle下
个？ |
|
r*****s
发帖数: 74 | 34 有个想法，不知道对不对
假设共有n个数，要分到m个文件里面去。
A[] 有n个数需要shuffle
先随机分到m个文件中去
for int i : A
int d = random(1 to m)
put A[i] to file[d]
end
for i = 0: m - 1
shuffle file[i]
end
for i = 0:A.length - 1
int d = random(1 to m)
A[i] = pop the first number from file[m]
end
某个数分配到某一个文件的概率是1/m，它出现在这个文件某一个位置的概率是m/n，然
后大数列里某个位置抽到这个数的概率是大约是1/n？没具体算，拍脑袋乱算的概率…… |
|
|
e******8
发帖数: 5 | 36 I always think so。 But my boss still want the shuffle result. Actually,i do
not understand why i have to do shuffle...
variable.
have |
|
|
w*******y
发帖数: 60932 | 38 Apple iPod shuffle 2 GB Blue (4th Generation) NEWEST MODEL:
http://www.amazon.com/Apple-shuffle-Silver-Generation-NEWEST/dp
Technical Details
Color: Blue
* 2 GB capacity for about 500 songs
* Up to 15 hours of audio playback on a single charge
* Easy-to-use control pad for playing your music, audiobooks, and
podcasts
* Support for AAC, Protected AAC (iTunes Store), MP3, MP3 VBR, Audible,
Apple Lossless, AIFF, and WAV audio formats
* One-year limited warranty
|
|
w*******y
发帖数: 60932 | 39 Using coupon code 72930 for 30% off and free ship, mydeal1999
SkechersGirls Twinkle Toes: Shuffles-Valley Girl:
http://shop.stagestores.com/shoes/cpr-skechers-twinkle-toes-shu
Like, totally awesome style goes into the SkechersTwinkle Toes: Shuffles -
Valley Girl shoe. Soft canvas fabric upper in a slip on casual sneaker with
glitter fabric overlays, stitching detail and sequin toe cap.
Glittering gem accent at lace area
Slip on design
Internal elastic tongue keeper straps for stay-put fit
So... 阅读全帖 |
|
c*****r
发帖数: 8227 | 40 看来Trump还是信不过胖州长
President-elect Donald Trump shuffled his transition team three days after
his surprising victory, increasing the influence of Alabama Sen. Jeff
Sessions, one of Washington’s most vocal critics of illegal immigration,
while diluting the role of New Jersey Gov. Chris Christie.
Mr. Christie was removed as transition chairman on Friday, a position that
will now be filled by Vice President-elect Mike Pence, the transition team
confirmed. Mr. Christie will remain on the transition tea... 阅读全帖 |
|
A*******y
发帖数: 181 | 41 我想卖的物品:
Ipod shuffle 4GB green color newest generation
单张面值:
74.99 + tax
可接受价格(必须明码标价！):
60
物品新旧要求:
new factory sealed
邮寄方式要求:
your label
买卖双方谁承担邮寄损失(Required if not code only):
default
付款方式说明:
boa
paypal non-cc
其他补充说明:
广告的有效期:
till gone
物品来源(Required for All Cards!):
gift
我的联系方式:
bbs
Warranty期限:
factory warranty |
|
t*****8
发帖数: 248 | 42 New iPod shuffle 2GB(blue) -$50 my label |
|
t********a
发帖数: 2402 | 43 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
9 X Apple iPod shuffle 4th Generation Pink (2 GB) (Latest Model)
单张面值:
可接受价格(必须明码标价！):
$34
物品新旧要求:
refurbished, sealed.
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
Before me, after you
付款方式说明:
BOA, billpay,chasequickpay
其他补充说明:
广告的有效期:
物品来源(Required for All Cards!):
我的联系方式:
PM
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
|
s********e
发帖数: 295 | 44 二手交易风险自负！请自行验证是否合法和一手卡！:
y
我想卖的物品:
4 x ipod shuffle 4th gen 2GB $35
单张面值:
49 + tax new.
可接受价格(必须明码标价！):
$35
物品新旧要求:
new sealed
邮寄方式要求:
your label
买卖双方谁承担邮寄损失(Required if not code only):
Before me,after you
付款方式说明:
billpay or paypal masspay
其他补充说明:
http://store.apple.com/us/browse/home/shop_ipod/family/ipod_shu
广告的有效期:
til gone
物品来源(Required for All Cards!):
我的联系方式:
PM
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
|
m**3
发帖数: 2061 | 45 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
1x iPod nano 8GB Graphite (MC584LL/A) @ 115
1x iPod shuffle 2GB Silver (MC688LL/A) @ 35
if both taken and shipped w one label, I can accept 145 for both
单张面值:
可接受价格(必须明码标价！):
$115
$35
物品新旧要求:
New sealed
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
Before me, after you
付款方式说明:
BOA/ Pay Pal
其他补充说明:
广告的有效期:
till gone
物品来源(Required for All Cards!):
我的联系方式:
站内
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
|
b****z
发帖数: 4485 | 46 Store price : $129.00
Ask for $113 each
You label or pick up in NYC
Also 1 IPOD SHUFFLE 2GB (4th Generation) NEWEST MODEL
Ask for $ 41 |
|
b****z
发帖数: 4485 | 47 Store price : $129.00
Ask for $111 each
You label or pick up in NYC
Also 1 IPOD SHUFFLE 2GB (4th Generation) NEWEST MODEL
Ask for $ 40 |
|
c*****a
发帖数: 8464 | 48 前几天不小心把老 shuffle的数据线踩坏了，不知道能不能买个新的一起用。 |
|
t*****8
发帖数: 248 | 49 New iPod shuffle 2GB(blue) -$50 my label |
|
t********a
发帖数: 2402 | 50 二手交易风险自负！请自行验证是否合法和一手卡！:
我想卖的物品:
9 X Apple iPod shuffle 4th Generation Pink (2 GB) (Latest Model)
单张面值:
可接受价格(必须明码标价！):
$34
物品新旧要求:
refurbished, sealed.
邮寄方式要求:
YL
买卖双方谁承担邮寄损失(Required if not code only):
Before me, after you
付款方式说明:
BOA, billpay,chasequickpay
其他补充说明:
广告的有效期:
物品来源(Required for All Cards!):
我的联系方式:
PM
Warranty期限:
能否证明是合法的一手卡?(Required for All Cards!):
state and zip: |
|
