How Does JavaScript's `sort()` Method Work for Sorting Numerical Arrays?

How Javascript's Sort() Method Functions for Numerical Arrays

Javascript's sort() method enables efficient sorting of arrays using a callback function. This function provides a way to compare elements and determine their order.

Callback Function Usage:

The sort() method utilizes a callback function that takes two arguments (a and b), representing the elements being compared. The function should return a value that indicates their relative order:

• Less than 0: a is ordered before b.
• Zero: a and b are considered equal.
• Greater than 0: b is ordered before a.

Sorting Order:

For the given code snippet:

var array=[25, 8, 7, 41]

array.sort(function(a,b){
  return a - b
})

The callback function (a - b) subtracts the second number (b) from the first number (a), resulting in a positive value for pairs like (25, 8) where 25 should come before 8 in the sorted order.

Multiple Callback Calls:

The callback function is invoked multiple times during the sorting process. For the given example, the following comparisons occur:

• 25 and 8
• 25 and 7
• 8 and 7
• 25 and 41

Sorted Result:

After multiple callback calls, the array is sorted numerically in ascending order:

[7, 8, 25, 41]

By leveraging the callback function, the sort() method efficiently compares and reorders elements, leading to the desired numerical sorting.

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