Question

给出一个阵列，其中包含不同家用电器在工作日消耗的功率单元数量。您必须找到阵列中每个设备的总消耗量。结果数组应该是（'REFRIGERATOR'=＆gt; 47，'WASHINGMACHINE'=＆gt; 29，...）

$consumption = array(
    'MONDAY' => array(
        'REFRIGERATOR' => array(3, 9, 7), 
        'WASHINGMACHINE' => array(2, 4, 2, 8)), 
    'TUESDAY' => array(
        'REFRIGERATOR' => array(5, 3, 8), 
        'OVEN' => array(4, 1, 4)), 
    'WEDNESDAY' => array(
        'TV' => array(6, 9), 
        'REFRIGERATOR' => array(2, 3, 5, 2)), 
    'THURSDAY' => array(
        'TV' => array(5, 3, 3, 2), 
        'FAN' => array(4, 9, 8, 5)), 
    'FRIDAY' => array(
        'WASHINGMACHINE' => array(8, 5), 
        'OVEN' => array(3, 9, 7))
    );

输出：数组（[REFRIGERATOR] =＆gt; 47 [WASHINGMACHINE] =＆gt; 29 [OVEN] =＆gt; 28 [TV] =＆gt; 28 [FAN] =＆gt; 26）

Answer 1

您的代码大多是正确的，只需要进行一些调整：

boolean isRooted;
@Override
protected void onCreate(Bundle savedInstanceState) {

 isRooted=AndroidUtils.isDeviceRooted();

 if (isRooted) {
    Intent i = new Intent(this, ActivityB.class);
    i.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
    startActivity(i);
    finish();
 }else{
     ....
     // other code of onCreate()
 }

}

请注意以下事项：

1）不要覆盖您正在使用的变量。我创建了一个新的$consumption = array( 'MONDAY' => array('REFRIGERATOR' => array(3, 9, 7), 'WASHINGMACHINE' => array(2, 4, 2, 8)), 'TUESDAY' => array('REFRIGERATOR' => array(5, 3, 8), 'OVEN' => array(4, 1, 4)), 'WEDNESDAY' => array('TV' => array(6, 9), 'REFRIGERATOR' => array(2, 3, 5, 2)), 'THURSDAY' => array('TV' => array(5, 3, 3, 2), 'FAN' => array(4, 9, 8, 5)), 'FRIDAY' => array('WASHINGMACHINE' => array(8, 5), 'OVEN' => array(3, 9, 7)) ); $data = array(); foreach ($consumption as $k=>$subArray) { foreach ($subArray as $id=>$value) { if(!isset($data[$id])) { $data[$id] = 0; } $data[$id]+=array_sum($value); } }数组，用于存储您想要的数据。

2）$ value实际上是消费值数组。使用array_sum获取该数组的总和，然后将其添加到相关的计数器中。

3）确保在添加索引之前创建索引，这样就不会出错。

怎么解决这个数组？

1 个答案: