PHP Exercises: Create a new string which is n copies of the the first 3 characters of a given string
PHP Basic Algorithm: Exercise-26 with Solution
Write a PHP program to create a new string which is n (non-negative integer) copies of the the first 3 characters of a given string. If the length of the given string is less than 3 then return n copies of the string.
Sample Solution:
PHP Code :
<?php
// Define a function that repeats the front part of a string $n times
function test($s, $n)
{
// Initialize an empty string to store the result
$result = "";
// Define the number of characters from the front of the string to repeat
$frontOfString = 3;
// Adjust $frontOfString if it exceeds the length of the input string
if ($frontOfString > strlen($s)) {
$frontOfString = strlen($s);
}
// Extract the front part of the string
$front = substr($s, 0, $frontOfString);
// Concatenate the front part to the result $n times
for ($i = 0; $i < $n; $i++) {
$result = $result . $front;
}
// Return the final result
return $result;
}
// Test the function with different inputs
echo test("Python", 2) . "\n";
echo test("Python", 3) . "\n";
echo test("JS", 3) . "\n";
?>
Sample Output:
PytPyt PytPytPyt JSJSJS
Visual Presentation:
Flowchart:
PHP Code Editor:
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