ZigzagConversion::convert() - Code Metrics - imajinyun/leetcode-php - Measure and Improve Code Quality continuously with Scrutinizer

↳ Parent: ZigzagConversion

Conditions	8
Paths	6

Total Lines	20
Code Lines	12

Lines	0
Ratio	0 %

Changes	2
Bugs	0	Features	0

1			<?php
2
3			declare(strict_types=1);
4
5			namespace leetcode;
6
7			class ZigzagConversion
8			{
9			public static function convert(string $str, int $numRows): string
10			{
11			[$m, $n] = [$numRows, strlen($str)];
12			if ($m <= 1 \|\| $m >= $n) {
13			return $str;
14			}
15			[$s, $k] = ['', 2 * $m - 2];
16			for ($i = 0; $i < $m; $i++) {
17			for ($j = $i; $j < $n; $j += $k) {
18			$s .= $str[$j];
19			if ($i !== 0 && $i !== $numRows - 1) {
20			$t = $j + $k - 2 * $i;
21			if ($t < $n) {
22			$s .= $str[$t];
23			}
24			}
25			}
26			}
27
28			return $s;
29			}
30
31			public static function convert2(string $str, int $numRows): string
32			{
33			[$m, $n] = [$numRows, strlen($str)];
34			if ($m <= 1 \|\| $m >= $n) {
35			return $str;
36			}
37			[$ans, $key, $step] = [array_fill(0, $m, ''), 0, 1];
38			for ($i = 0; $i < $n; $i++) {
39			$ans[$key] .= $str[$i];
40			if ($key === 0) {
41			$step = 1;
42			} elseif ($key === $m - 1) {
43			$step = -1;
44			}
45			$key += $step;
46			}
47
48			return implode('', $ans);
49			}
50			}
51

imajinyun / leetcode-php