Question

来自这个词汇

$words = ['THIS', 'IS', 'AN', 'EXAMPLE'];

我想把句子写成如下：

$sentences = [
    'THIS IS AN EXAMPLE',
    'THIS IS AN',
    'THIS IS',
    'THIS'
];

此外，我想知道如何扭转它的ORDER，

喜欢从THIS开始EXAMPLE，如'THIS IS AN EXAMPLE'

或者从EXAMPLE开始THIS，例如'EXAMPLE AN IS THIS'

或从前进到后退，从后退到前进，所以我得到

$sentences = [
    'THIS IS AN EXAMPLE',
    'THIS IS AN',
    'THIS IS',
    'THIS',
    `EXAMPLE AN IS THIS`,
    `EXAMPLE AN IS`,
    `EXAMPLE AN`,
    `EXAMPLE`
];

我尝试的是

    $sentences = [];
    $words = ['THIS', 'IS', 'AN', 'EXAMPLE'];
    $wordscount = count($words);
    $i = 1;
    while ($i < $wordscount) {
        $newword = '';
        foreach ($words as $word) {
            $newword .= "$word ";
        }
        while (in_array($newword, $sentences)) {
            $newword = explode(' ', $newword);
            $newword = array_pop($newword);
            $newword = implode(' ', $newword);
            echo "$newword <br>";
        }
        $sentences[] = $newword;
        $i++;
    }
print_r($sentences);

并且它不完整因为当我加载页面时，Web浏览器和FastCGI CPU使用率每个跳转到50％并且页面显示了内存使用问题。

Answer 1

我就是这样做的：

创建一个循环，该循环将迭代数组中的项目总数。
通过迭代值减少数组并将其内插到返回值中阵列。

然后再次执行相同操作，但只需使用反向数组并将它们合并。

例如：

<?php
function join_words($words) {
    $return = [];
    for ($i=0; $i < count($words); $i++) {
        $return[] = implode(' ', array_slice($words, 0, $i+1));
    }
    return $return;
}

$words = ['THIS', 'IS', 'AN', 'EXAMPLE'];

$result = [];
$result = array_merge($result, join_words($words));
$result = array_merge($result, join_words(array_reverse($words)));

print_r($result);

https://3v4l.org/vG7tj

<强>结果：

Array
(
    [0] => THIS
    [1] => THIS IS
    [2] => THIS IS AN
    [3] => THIS IS AN EXAMPLE
    [4] => EXAMPLE
    [5] => EXAMPLE AN
    [6] => EXAMPLE AN IS
    [7] => EXAMPLE AN IS THIS
)

如果你想要如图所示的确切输出，你应该在合并它之前反转它。

$result = [];
$result = array_merge($result, array_reverse(join_words($words)));
$result = array_merge($result, array_reverse(join_words(array_reverse($words))));

https://3v4l.org/R4LDo

<强>结果：

Array
(
    [0] => THIS IS AN EXAMPLE
    [1] => THIS IS AN
    [2] => THIS IS
    [3] => THIS
    [4] => EXAMPLE AN IS THIS
    [5] => EXAMPLE AN IS
    [6] => EXAMPLE AN
    [7] => EXAMPLE
)

从一个单词数组中创建所有可能的句子

1 个答案: