Add solution 26.

Author: javadev

src/Algorithms/0026.remove-duplicates-from-sorted-array/remove-duplicates-from-sorted-array.php

@@ -0,0 +1,26 @@
+class Solution {
+
+    /**
+     * @param Integer[] $nums
+     * @return Integer
+     */
+    function removeDuplicates(&$nums) {
+        if (count($nums) < 2)
+            return count($nums);
+
+        $j = 0;
+        $i = 1;
+
+        while ($i < count($nums)) {
+            if ($nums[$i] == $nums[$j]) {
+                $i++;
+            } else {
+                $j++;
+                $nums[$j] = $nums[$i];
+                $i++;
+            }
+        }
+
+        return $j + 1;
+    }
+}