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解答例

PHP

<?php
header("Content-type: text/html; charset=utf-8");

for($cnt = 1; $cnt <= 10; $cnt++){
	echo $cnt;
	echo ",";
}

echo "<br>";

for($cnt = 10; $cnt >= 1; $cnt = $cnt - 2){
	echo $cnt;
	echo ",";
}
?>

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