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<?php
declare(strict_types=1);
namespace leetcode;
class RemoveDuplicatesFromSortedArray
{
public static function removeDuplicates(array &$nums): int
if (($n = count($nums)) === 0) {
return 0;
}
$k = 0;
for ($i = 1; $i < $n; $i++) {
if ($nums[$i] === $nums[$i - 1]) {
$k++;
} else {
$nums[$i - $k] = $nums[$i];
return $n - $k;
public static function removeDuplicates2(array &$nums): int
[$i, $j] = [1, 0];
for (; $i < $n; $i++) {
if ($nums[$i] !== $nums[$j]) {
$nums[++$j] = $nums[$i];
return $j + 1;
imajinyun /
leetcode-php
