w3resource

PHP Exercises: Check if the value of each element is equal or greater than the value of previous element of a given array of integers


130. Check Non-Decreasing Order of Array

Write a PHP program to check if the value of each element is equal or greater than the value of previous element of a given array of integers.

Sample Solution:

PHP Code :

<?php
// Define a function named 'test' that takes an array of numbers as a parameter
function test($numbers)
{ 
    // Iterate through the elements of the input array using a for loop
    for ($i = 0; $i < sizeof($numbers) - 1; $i++)
    {
        // Check if the next element is less than the current element
        if ($numbers[$i + 1] < $numbers[$i]) 
        {
            // If true, the array is not in ascending order, so return false
            return false;
        }
    }

    // If the loop completes without returning false, the array is in ascending order, so return true
    return true;
}   

// Use the 'var_dump' function to print the result of the 'test' function for different arrays
var_dump(test([5, 5, 1, 5, 5]));
var_dump(test([1, 2, 3, 4]));
var_dump(test([3, 3, 5, 5, 5, 5]));
var_dump(test([1, 5, 5, 7, 8, 10]));
?>

Sample Output:

bool(false)
bool(true)
bool(true)
bool(true)

Flowchart:

Flowchart: Check if the value of each element is equal or greater than the value of previous element of a given array of integers.

For more Practice: Solve these Related Problems:

  • Write a PHP script to determine if an array is sorted in non-decreasing order by comparing each element with its predecessor.
  • Write a PHP function to iterate over an array and return true if every element is equal or greater than the previous one.
  • Write a PHP program to use a loop to verify that no element in the array is less than the one that comes before it.
  • Write a PHP script to implement a check for non-decreasing order and output a boolean based on the result.

PHP Code Editor:



Contribute your code and comments through Disqus.

Previous: Write a PHP program to create new array from a given array of integers shifting all even numbers before all odd numbers.
Next: Write a PHP program to check a given array (length will be atleast 2) of integers and return true if there are two values 15, 15 next to each other.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.