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
### Mantel Clocks for Fireplace: Timeless Elegance for Your Home
The fireplace often serves as the heart of a home, creating a warm and inviting ambiance. To further enhance its charm, a carefully chosen mantel clock can act as a centerpiece, combining functionality with aesthetic appeal. Mantel clocks for fireplaces have long been symbols of sophistication, and their timeless designs continue to captivate homeowners.
#### The History of Mantel Clocks
Mantel clocks, also known as shelf clocks, originated in the 18th century as compact timepieces designed to sit atop a fireplace mantel. These clocks became popular in European homes for their elegance and practicality. Crafted from materials like wood, brass, and porcelain, they often featured intricate details, showcasing the craftsmanship of their era.
#### Why Choose a Mantel Clock for Your Fireplace?
1. **Aesthetic Appeal**: Mantel clocks come in a variety of designs, from traditional to modern, making them a versatile decorative piece for any home style.
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#### Types of Mantel Clocks
1. **Traditional Mantel Clocks**: Featuring ornate carvings and classic Roman numerals, these are ideal for vintage or classic interiors.
2. **Modern Mantel Clocks**: With sleek lines and minimalist designs, they suit contemporary homes.
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#### Choosing the Perfect Mantel Clock
When selecting a mantel clock for your fireplace, consider the following:
– **Size**: Ensure the clock fits proportionally on your mantel without overwhelming the space.
– **Material**: Match the clock’s material to other elements in the room, such as wood, metal, or ceramic.
– **Mechanism**: Choose between mechanical, quartz, or battery-operated clocks based on your preferences.
– **Style**: Select a design that complements your room’s decor, whether it’s rustic, modern, or traditional.
#### Care and Maintenance of Mantel Clocks
To keep your mantel clock in top condition:
– **Regular Cleaning**: Dust the clock regularly using a soft, dry cloth.
– **Winding**: If you own a mechanical clock, wind it according to the manufacturer’s instructions.
– **Professional Servicing**: For antique clocks, seek professional maintenance to preserve their intricate mechanisms.
– **Placement**: Avoid placing the clock in direct sunlight or near extreme heat to prevent damage.
#### Where to Find Mantel Clocks
Mantel clocks are available in:
– **Antique Stores**: For vintage and unique pieces with historical value.
– **Home Decor Shops**: Offering a wide range of modern and traditional styles.
– **Online Marketplaces**: Providing convenience and variety at competitive prices.
#### Conclusion
A mantel clock is more than just a timepiece; it’s a statement of style and elegance. Whether you prefer a modern design or an antique treasure, these clocks can elevate the look of your fireplace and your home. With the right choice, a mantel clock can become a cherished heirloom, adding timeless beauty and charm to your living space.
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