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How to use 'sed' add 'zero' only before the single number?

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# 1  
Old 06-18-2010
How to use 'sed' add 'zero' only before the single number?
input numbers in random:
11 2 3 44 5 66 7 8 99 0 11 2 3 44 5

output should looks like this:
11 02 03 44 05 66 07 08 99 00 11 02 03 44 05

Thanks.
# 2  
Old 06-18-2010
With awk:
Code:
awk '{for(i=1;i<=NF;i++){$i=sprintf("%02d",$i)}}1'

# 3  
Old 06-18-2010
Code:
str="11 2 3 44 5 66 7 8 99 0 11 2 3 44 5"

Code:
printf "%02d " $str; echo

# 4  
Old 06-21-2010
perl should be ok
Code:
my $str='';
$str=~s/([0-9]+)/($1 >= 10)?$1:'0'.$1/ge
print $str;

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