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[英]Count consecutive repeated elements in array in the same sequence as they are
[英]count elements consecutive array php
我有數組:
$type = ['A','A','A','E','E','E','A','E','A','A','E','E'];
1 2 3 4 5
我打算計算長度大於或等於2的連續鏈中包含的元素A
的數量。在示例中,我有3個鏈,但我只想計算其中的2個。 總計結果應為5。
查找“ CA”的連續鏈
$count = 0;
$link = array(); // Here will be chain lengths
array_push($types, ''); // to work if the last item == 'CA'
foreach($types as $item)
if ($item == 'CA') $count++;
else if ($count)
{ $link[] = $count; $count = 0; }
rsort($link); // 3, 2, 1
$sum = 0;
foreach ($link as $i)
if ($i >= 2) $sum += $i; // Count result
else break; // Further chains are shorter than we want
echo $sum;
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