Binary search is a more efficient algorithm for finding an element in a sorted array. It works by repeatedly dividing the search interval in half. Here's a detailed breakdown of your binarySearch function:
function binarySearch(array $arr, float|int $x) { $low = 0; $high = count($arr)-1; // $midIndex = (int) ($low ($high - $low)/2); $i = 0; while($low $arr[$midIndex]){ $low = $midIndex 1; echo $low."\n"; }else{ $high = $midIndex - 1; } } return "The number {$x} was not found in the array"; } echo binarySearch([1,2,3,4,5,6,7,8,9,10,44,45,46,47,48,49,50], 45)
The function binarySearch accepts two parameters:
Linear search is one of the simplest searching algorithms used to find a particular element in an array. Let's break down the linearSearch function in PHP.
function linearSearch(array $arr, float|int $x) { for($i=0; $iThe function linearSearch accepts two parameters:
- $arr: An array of integers.
- $x: The number to be searched, which can be a float or an integer.
- The for loop iterates over each element of the array. The count($arr) function returns the number of elements in the array.
- Inside the loop, the code checks if the current element ($arr[$i]) is equal to $x. If a match is found, it returns a message indicating the index at which the number was found.
- If the loop completes without finding the number, the function returns a message indicating that the number was not found in the array.
- Linear search is straightforward and easy to implement. It sequentially checks each element of the array until the desired element is found or the end of the array is reached. This approach is simple but can be inefficient for large arrays, as it has a time complexity of O(n).
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