Question

我正在计算数组的元素，并使用array_count_values将结果存储在数组中。

让我们考虑这是这个实例的输出，它是从一个数组创建的，而这个数组是在爆炸的帮助下创建的。

magazine = Array(
    [avatar] => 1
    [essence] => 6
    [pie] => 1
    [multiplex] => 1
    [bill] => 2
    [nice] => 2
    [pie ] => 1
) 

ransom = Array(
    [multiplex] => 1
    [pie] => 2
    [avatar] => 3
    [bill] => 1
    [nice] => 3
    [essence] => 1
)

现在，我想检查Array Magazine中是否有Array赎金中的元素。如果赎金中的元素在杂志中不可用，则应该退出循环。（或）如果元素存在，那么赎金中该元素的值不能大于杂志中相同的元素值。

我怎样才能做到这一点？在这种情况下如何使用嵌套的foreach？因为我不能在这里使用简单的for循环。

$ransom_temp = "avatar essence pie multiplex bill nice essence nice bill essence essence essence essence pie"
$magazine_temp = "multiplex pie pie avatar bill nice nice nice avatar essence avatar"

$magazine = explode(" ",$magazine_temp);
$ransom = explode(" ",$ransom_temp);
$countRan = array_count_values($ransom);
$countMag = array_count_values($magazine);

print_r($countMag);
print "<br>";
print_r($countRan);

if($n > $m){
    print "No";
    return;
}

foreach($countRan as $key1=>$value1){
    foreach($countMag as $key2=>$value2)
    if($key1 != $key2) || $value1 > $value2){
        print "No";
        return;
    }   
}
print "Yes";

Answer 1

你只需要一个循环：

$ransom_temp = "avatar essence pie multiplex bill nice essence nice bill essence essence essence essence pie"
$magazine_temp = "multiplex pie pie avatar bill nice nice nice avatar essence avatar"

$magazine = explode(" ",$magazine_temp);
$ransom = explode(" ",$ransom_temp);
$countRan = array_count_values($ransom);
$countMag = array_count_values($magazine);

print_r($countMag);
print "<br>";
print_r($countRan);

if(count($countRan) > count($countMag)) {
    print "No";
    return;
}

foreach ($countRan as $key => $value){
    // exit if key not exists in $countMag array
    // or exit if value in $countRan[$key] greater than $countMag[$key]
    if (!array_key_exists($key, $countMag) || $value > $countMag[$key]) {
        print "No";
        return;
    }
}
print "Yes";

比较两个array_count_values数组 - 键和值 - PHP

1 个答案: