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
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For those living in Scarborough, LaPlante Electric is the trusted partner for maintaining a functional and safe electrical
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ensures that both residential and commercial clients have dependable
electrical systems to handle various needs. The
significance of having a skilled electrician in Scarborough cannot be overstated, as
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vital for ensuring safety and functionality in homes and businesses.
LaPlante Electric operates in Scarborough, a town founded in 1658.
Scarborough has grown into a vibrant community with a population of 20,
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Electrical repair costs in Scarborough can vary widely depending on the type of
service required. Basic services like outlet repair or lighting installation might range from $100 to
$300, while more extensive work such as electrical
panel upgrades or home rewiring can cost between $500 and $3,000.
Scarborough experiences a range of temperatures, with summer highs
reaching around 80°F and winter lows dropping to approximately 15°F.
These temperature variations necessitate reliable electrical systems that can handle both heating and cooling demands, ensuring
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Scarborough offers numerous points of interest that cater to a variety of preferences.
Blue Point Preserve is a beautiful natural area perfect
for outdoor activities and bird watching. Bug Light
Park provides stunning views of the harbor and is a popular spot for picnics and kite flying.
Crescent Beach State Park offers a pristine shoreline for
swimming and sunbathing. The Eastern Trail is a scenic route for biking and hiking, connecting various parts of Scarborough.
Lastly, Scarborough Beach State Park is known for its surf and sand, attracting visitors for its recreational opportunities.
Each of these attractions offers unique experiences that highlight Scarborough’s diverse cultural and natural offerings.
Choosing LaPlante Electric for electrical services in Scarborough is a wise decision for residents and businesses
seeking reliable and efficient solutions. The company offers a comprehensive range of services, including electrical troubleshooting, surge protection, and smart home installation. LaPlante Electric’s commitment to quality workmanship
and exceptional customer service ensures that all electrical needs are met promptly and professionally.
For those living in Scarborough, LaPlante Electric is the trusted partner for
maintaining a functional and safe electrical system,
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In Scarborough, Maine, reliable electrical services are crucial due to the town’s growing residential and commercial infrastructure.
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wiring, circuit breaker repair, and lighting installation. Serving neighborhoods
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from routine maintenance to complex installations. The importance of having a
skilled electrician in Scarborough cannot be overstated, as
proper electrical maintenance and prompt repairs are vital for ensuring safety and functionality in homes
and workplaces.
LaPlante Electric is located in Scarborough, a town founded
in 1658. Scarborough has developed into a thriving community with a population of
20,352 as of 2018 and 9,168 households. The town is conveniently connected by major highways, including State Route 207, which facilitates easy travel across the region. An interesting fact about Scarborough is
its rich history and scenic landscapes, making it a desirable place to live
and visit. The town offers a blend of residential, commercial, and recreational opportunities, contributing to its charm and appeal.
The cost of electrical repairs in Scarborough can vary depending on the service required.
Basic services like outlet repair or lighting installation might range
from $100 to $300, while more extensive work
such as electrical panel upgrades or home rewiring can cost between $500 and $3,000.
Scarborough experiences a range of temperatures, with summer highs reaching around 80°F and winter
lows dropping to approximately 15°F. These temperature fluctuations make it essential for residents to have reliable
electrical systems that can handle both heating and cooling needs, ensuring year-round comfort and
safety.
Scarborough offers numerous points of interest that cater to
a variety of tastes and preferences. Blue
Point Preserve is a beautiful natural area perfect for outdoor activities and bird watching.
Bug Light Park provides stunning views of the harbor and is a popular spot for picnics and kite flying.
Crescent Beach State Park offers a pristine shoreline for swimming and
sunbathing. The Eastern Trail is a scenic route for
biking and hiking, connecting various parts of Scarborough.
Lastly, Scarborough Beach State Park is known for its surf and
sand, attracting visitors for its recreational opportunities.
Each of these attractions provides unique experiences that highlight Scarborough’s diverse cultural and natural offerings.
Choosing LaPlante Electric for electrical services in Scarborough is a
wise decision for residents and businesses seeking reliable and efficient solutions.
The company offers a comprehensive range of services,
including electrical troubleshooting, surge protection, and smart
home installation. LaPlante Electric’s commitment to quality workmanship and exceptional customer service ensures that all electrical needs are met
promptly and professionally. For those living in Scarborough, LaPlante
Electric is the trusted partner for maintaining a functional and safe electrical system,
providing peace of mind and comfort throughout the year.
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LaPlante Electric operates in Scarborough, a town founded in 1658.
Scarborough has grown into a vibrant community with a population of 20,352 as of 2018 and 9,168 households.
The town is well-connected by major highways, including State Route 207, which facilitates easy
travel across the region. An interesting fact about
Scarborough is its combination of historical charm and modern amenities, making it an attractive
place to live and work. The town offers a
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