23 lines
254 B
PHP
23 lines
254 B
PHP
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<?php
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$b="0123";
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$a=strrev($b);
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while ($a !=$b) {
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$i=1;
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while($a[$i] > $a[$i-1]) {
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$i++;
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}
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$j=0;
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while($a[$j] < $a[$i]) {
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$j++;
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}
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$c=$a[$j];
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$a[$j]=$a[$i];
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$a[$i]=$c;
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$a=strrev(substr($a, 0, $i)).substr($a, $i);
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print $a. "\n";
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}
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?>
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