JavaScript Array Sort

The sort() method sorts an array alphabetically: 
The reverse() method reverses the elements in an array.
You can use it to 
sort an array in descending order: 
By default, the sort() function sorts values as strings.
This works well for strings ("Apple" comes before "Banana").
However, if numbers are sorted as strings, "25" is bigger than "100", 
because "2" is bigger than "1".
Because of this, the sort() method will produce incorrect result when sorting 
numbers.
You can fix this by providing a compare function:
Use the same trick to sort an array descending:
The purpose of the compare function is to define an alternative sort 
order.
The compare function should return a negative, zero, or positive value, depending on 
the arguments:
When the sort() function compares two values, it sends the values to the 
compare function, and sorts the values according to the returned (negative, 
zero, positive) value.
If the result is negative a is sorted before
b.
If the result is positive b is sorted 
before a.
If the result is 0 no changes are done with the sort order of the two 
values.
Example:
The compare function compares all the values in the array, two values at a 
time (a, b).
When comparing 40 and 100, the sort() method calls the compare function(40, 100).
The function calculates 40 - 100 (a - b), and 
since the result is negative (-60),  the sort function will sort 40 as a value lower than 100.
You can use this code snippet to experiment with numerically and 
alphabetically sorting:

Try it Yourself »

The above example, array.sort(), is not accurate, it will favor some 
numbers over the others.
The most popular correct method, is called the Fisher Yates shuffle, and was 
introduced in data science as early as 1938!
In JavaScript the method can be translated to this:

Try it Yourself »

There are no built-in functions for finding the max or min 
value in an array.
However, after you have sorted an array, you can use the 
index to obtain the highest and lowest values.
Sorting ascending:
Sorting descending:
Sorting a whole array is a very inefficient method if you only want to find the highest (or lowest) value.
You can use Math.max.apply to find the highest number in an array:

Try it Yourself »

Math.max.apply(null, [1, 2, 3]) is equivalent to Math.max(1, 2, 3).
You can use Math.min.apply to find the lowest number in an array:

Try it Yourself »

Math.min.apply(null, [1, 2, 3]) is equivalent to Math.min(1, 2, 3).
The fastest solution is to use a "home made" method.
This function loops through an array comparing each value with the highest 
value found: 

Try it Yourself »

This function loops through an array comparing each value with the lowest 
value found: 

Try it Yourself »

JavaScript arrays often contain objects:
Even if objects have properties of different data types, the sort() method 
can be used to sort the array. 
The solution is to write a compare function to compare the property values:
Comparing string properties is a little more complex:
For a complete Array reference, go to our:
Complete JavaScript Array Reference.
The reference contains descriptions and examples of all Array 
properties and methods.
Use the correct Array method to sort the fruits array alphabetically.
const fruits = ["Banana", "Orange", "Apple", "Kiwi"];
;

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