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<?php $n = 495902 ; foreach(array_count_values(str_split($n))as$x=>$i){$h=($i==1&&$x>$h)?$x:$h;} echo $h;
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $h in /in/ItuGv on line 5 5

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