26 lines
420 B
PHP
26 lines
420 B
PHP
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<?php
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function collatz_sequence($x)
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{
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$num_seq = [$x];
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if ($x < 1)
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{
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return [];
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}
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while ($x > 1)
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{
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if ($x % 2 == 0)
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{
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$x = $x / 2;
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}
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else
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{
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$x = 3 * $x + 1;
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}
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# Added line
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array_push($num_seq, $x);
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}
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return $num_seq;
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}
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print_r(collatz_sequence(12));
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print_r(collatz_sequence(19));
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?>
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