JS 依照元素出現數量排序
同樣是最近遇到的狀況，需要利用陣列內元素出現的數量進行排序，以下為範例程式：
var array = ["1", "2", "4", "5", "2", "4", "2", "3"];
var str = array.toString();
var filter = [];
var result = [];
document.write("原始陣列：" + array + "<br>");
var get = function (str, tar, arr, tmp) {
if (str.indexOf(tar) >= 0) {
tmp = str.slice(str.indexOf(tar) + 1);
arr.push(tar);
get(tmp, tar, arr, tmp);
}
return arr;
}
for (i in array) {
var elm = [];
var tmp;
var fstr = filter.join();
if (fstr.indexOf(array[i]) >= 0) {
continue;
} else {
var tmp_arr = get(str, array[i], elm, tmp);
result.push(tmp_arr.length + ':' + tmp_arr[0]);
filter.push(array[i]);
}
}
result.sort();
result.reverse();
//按照出現次數排序，不刪除重複元素
var finishArray = [];
for (index in result) {
var show = result[index].split(':');
for (i = 0; i < show[0]; i++) {
finishArray.push(show[1]);
}
}
document.write("按出現次數排序，不刪除重複元素：" + finishArray + "<br>");
//按照出現次數排序，刪除重複元素
var finishArray = [];
for (index in result) {
var show = result[index].split(':');
finishArray.push(show[1]);
}
document.write("按出現次數排序，刪除重複元素：" + finishArray + "<br>");
輸出結果：
原始陣列：1,2,4,5,2,4,2,3 按出現次數排序，不刪除重複元素：2,2,2,4,4,5,3,1 按出現次數排序，刪除重複元素：2,4,5,3,1
I don’t even know the way I stopped up here, however I assumed
this post used to be great. I don’t know who you are however definitely you’re going to a famous blogger in case you aren’t already.
Cheers!
Embrace the fusion of mystical symbolism and modern fashion with the Alchemai Tree of Life Hoodie. Crafted from a luxurious blend of soft, breathable fabrics, this hoodie features an intricately designed Tree of Life graphic on the front, symbolizing growth, connection, and enlightenment. The design’s detailed, alchemical elements make it a unique statement piece for those who appreciate both style and substance. With a cozy, relaxed fit and a spacious hood, this hoodie ensures comfort and versatility for everyday wear or special occasions. Elevate your wardrobe with a touch of spiritual elegance and timeless design. alchemai tree of life hoodie
lipitor online pharmacy price: xenical online pharmacy uk – tesco uk pharmacy viagra
Toda segunda-feira, https://https://mothercornshuckers.com// 90% de Centro Rakes o que você investiu em portal vira para sua carteira.
Hey! I know this is kinda off topic but I was wondering which blog platform are you using
for this website? I’m getting tired of WordPress because I’ve had issues with
hackers and I’m looking at options for another platform.
I would be great if you could point me in the direction of a good
platform.
I quite like looking through an article that will make men and women think.
Also, thank you for allowing for me to comment!
I’m really loving the theme/design of your website.
Do you ever run into any internet browser compatibility problems?
A few of my blog visitors have complained about my site not operating correctly in Explorer but looks great in Safari.
Do you have any recommendations to help fix this issue?
Every weekend i used to visit this web page, as i want
enjoyment, for the reason that this this site conations
really fastidious funny data too.
rx pharmacy viagra: trazodone online pharmacy – lloyd center pharmacy domperidone
There’s Enough! 15 Things About Men Masterbator
We’re Fed Up Of Hearing male masterbaters
selegiline pharmacy: princeton university store pharmacy – lotemax online pharmacy
whoah this blog is excellent i like reading your posts. Keep up the great work!
You recognize, a lot of persons are searching around for this info, you can help them greatly.
Guide To Train Injury Lawsuit: The Intermediate Guide Towards Train Injury Lawsuit Train Injury Lawsuit
Oh my goodness! Impressive article dude! Thanks, However I am going through issues with your RSS.
I don’t understand the reason why I am unable to join it.
Is there anybody else having similar RSS
problems? Anyone who knows the answer will
you kindly respond? Thanx!!
Please let me know if you’re looking for a writer for
your blog. You have some really great articles and I feel I would
be a good asset. If you ever want to take some of the load off, I’d really like
to write some material for your blog in exchange for a link back to mine.
Please send me an e-mail if interested. Regards!
Feel free to visit my website :: UltraK9 Pro
cialis united pharmacy: reliable rx pharmacy coupon code – order cialis at online pharmacy
An interesting discussion is definitely worth comment.
I believe that you should publish more about this subject, it might not be a taboo matter but typically people
don’t discuss these topics. To the next!
Best wishes!!
coumadin online pharmacy: no prescription needed pharmacy – american pharmacy ambien
Sildigra: precision pharmacy omeprazole powder – legit online pharmacy nolvadex
Hello, i think that i saw you visited my website so i came to
“return the favor”.I’m attempting to find things to improve my website!I suppose its ok to
use a few of your ideas!!
Awesome things here. I’m very happy to see your post.
Thank you so much and I am taking a look ahead to touch you.
Will you kindly drop me a mail?
10 Easy Steps To Start Your Own ADHD In Adult Women Symptoms Business
hyperactivity in women (Bridgett)
May I just say what a comfort to discover someone that really understands what they’re talking about on the net.
You definitely understand how to bring a problem to light and make
it important. A lot more people need to check this out and understand this side of your
story. I was surprised that you aren’t more popular because you most certainly have the gift.
when should a store close down a pharmacy?: store pharmacy – viagra mexico pharmacy
Very quickly this web site will be famous amid all blog viewers, due
to it’s nice posts
Онлайн-казино — это удобный способ насладиться азартными играми дома. Огромный выбор игр, бонусы и джекпоты ждут тех, кто готов испытать удачу!
лучшие лицензированные казино на деньги 2025
What i don’t understood is if truth be told how you are now not actually much more well-liked than you might be now.
You are so intelligent. You realize thus considerably in the case of this topic,
made me in my opinion imagine it from so many numerous angles.
Its like women and men aren’t interested unless it is one thing to do with Girl gaga!
Your personal stuffs great. Always maintain it up!
Useful information. Lucky me I discovered your site by chance, and I am shocked why this accident did not
took place in advance! I bookmarked it.
Hello there! I know this is kind of off topic but I was wondering which blog
platform are you using for this site? I’m getting
sick and tired of WordPress because I’ve had issues with hackers and I’m looking at options for another platform.
I would be fantastic if you could point me in the direction of a good platform.
https://chestnut-reindeer-dc4vl8.mystrikingly.com/blog/97962f0de1f