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
카지노사이트 카지노사이트 카지노사이트 카지노사이트 카지노사이트 카지노사이트 카지노사이트
Thanks for the insightful write-up. More like this at rhinoplasty portland
“Thankful that you highlighted moisture considerations when planning any type of floor install—it’s so flooring installation
Thanks to my local #anyKeywords#, I’m now aware of many safety protocols regarding gas usage Reliable Smart Gas Solutions for Central Heating and Boiler Repairs
Drugs information leaflet. Effects of Drug Abuse.
synthroid medication for thyroid
Actual about drugs. Get now.
Nicely detailed. Discover more at access platforms
A Peek At The Secrets Of Auto Lawyers Near Me Car Wreck Lawyer Near Me
This was very beneficial. For more, visit top plastic surgeon
I love your blog.. very nice colors & theme. Did you create this website yourself or did you hire someone to do it for you?
Plz respond as I’m looking to construct my own blog and would like to know where u got
this from. thanks a lot
Love how you pointed out the importance of using high-quality paints that last longer after repairs are done! roofer
Fantastic postings With thanks.
Tadalafil Tablet MaxPillsForMen.com Buy Tadalafil 10mg
Не упустите шанс осуществить задуманное!
Мы предлагаем выгодные кредиты с низкими ставками и быстрым одобрением.
– Авто, квартира, бизнес –
мы поддержим ваши планы!
Заполните заявку онлайн, и наши специалисты свяжутся с вами.
Creditter в Великом Новгороде
These are really fantastic ideas in regarding blogging.
You have touched some fastidious factors here. Any way keep up wrinting.
Hey! Do you know if they make any plugins to assist with Search Engine Optimization? I’m trying
to get my blog to rank for some targeted keywords but I’m
not seeing very good success. If you know of any please share.
Thanks!
Greate pieces. Keep writing such kind of information on your
page. Im really impressed by it.
Hi there, You have performed a fantastic job. I’ll definitely digg it and personally suggest to my friends.
I am sure they will be benefited from this website.
https://fastpillseasy.com/# buy erectile dysfunction treatment
This is my first time pay a visit at here and i am really happy to read all at one place.
I got this site from my buddy who told me concerning this site and now
this time I am browsing this website and reading very informative articles
at this time.
sildenafil online: FastPillsForMen.com – sildenafil online
https://maxpillsformen.com/# Buy Tadalafil 20mg
However, it is still unclear as to how big the changes might be and how exactly brands should react to the threats as anticipations coming from economists are mixed.
5 Laws Everybody In Best SEO Agency London Should Be Aware
Of Search engine Optimisation Company London
https://fastpillseasy.com/# best ed medication online
сделать загранпаспорт быстро guryevsk.forum24.ru/?1-4-0-00000570-000-0-0-1735286442 .
This site was… how do I say it? Relevant!!
Finally I have found something which helped me.
Appreciate it!
카지노사이트 카지노사이트 카지노사이트 카지노사이트 카지노사이트 카지노사이트 카지노사이트
Wonderful tips! Discover more at بلفاروپلاستی چیست
How To Use Your Essential Oils For Therapeutic Aromas
하이오피사이트
загранпаспорт быстро загранпаспорт быстро .