<?php
function edit_distance_ond($str1 ,$str2){
$array = array();
$x = 0;
$y = 0;
$offset = count($str1);
$array[$offset + 1] = 0;
for($D = 0; $D <= count($str1) + count($str2); $D++){
for($k = -$D; $k <= $D; $k += 2){
if($k == -$D || $k != $D && $array[$k-1+$offset] < $array[$k+1+$offset])
$x = $array[$k+1+$offset];
else
$x = $array[$k-1+$offset] + 1;
$y = $x - $k;
while($x < count($str1) && $y < count($str2) && $str1[$x] == $str2[$y]){
$x++;
$y++;
}
$array[$k+$offset] = $x;
if($x >= count($str1) && $y >= count($str2))
return $D;
}
}
return -1;
}
$a = array();
$a[0] = "aaa";
$a[1] = "bbb";
$a[2] = "ccc";
$b = array();
$b[0] = "aaa";
$b[1] = "bbb";
$b[2] = "cc";
echo edit_distance_ond($a,$b);
?>
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- 2
preferences:
238.95 ms | 405 KiB | 338 Q