Move all negative elements to end in php
Php program for Move all negative elements to end. Here mentioned other language solution.
<?php
// Php program for
// Move all negative elements at the end of array
class MyArray
{
// Display array elements
public function display($arr, $n)
{
for ($i = 0; $i < $n; $i++)
{
echo " ".($arr[$i]);
}
print("\n");
}
// Swap the given array elements
public function swap(&$arr, $start, $end)
{
$temp = $arr[$start];
$arr[$start] = $arr[$end];
$arr[$end] = $temp;
}
// Method which is move negative elements
public function moveNegative(&$arr, $n)
{
// first index
$i = 0;
// last index
$j = $n - 1;
while ($i < $j)
{
if ($arr[$i] < 0 && $arr[$j] >= 0)
{
// When [i] index are have negative value
// And [j] is positive then swapping elements values
$this->swap($arr, $i, $j);
// Modified index
$i++;
$j--;
}
else if ($arr[$i] >= 0)
{
// When element of [i] is not negative
$i++;
}
else
{
$j--;
}
}
}
public static function main()
{
$task = new MyArray();
// Array which are containing positive and negative values
$arr = array(1, -1, 3, 2, -7, -5, 11, 6);
$n = count($arr);
echo "Before Arrange : \n";
// Before move element
$task->display($arr, $n);
// Move negative elements
$task->moveNegative($arr, $n);
// After arrange
echo "After Arrange : \n";
// After move element
$task->display($arr, $n);
}
}
MyArray::main();
Output
Before Arrange :
1 -1 3 2 -7 -5 11 6
After Arrange :
1 6 3 2 11 -5 -7 -1
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