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On Sunday, October 11, 2020 3:54 PM, Cameron Simpson <c...@cskk.id.au> wrote:
> On 11Oct2020 18:54, None olivares33...@protonmail.com wrote:
>
> > The play 15 different sets of numbers and to check if they won any prize a
> > script using a chain of if statements or case statements would be correct
> > to implement this. AWK may also do the job?
> > There are six numbers that we need to check let us suppose that we had the
> > numbers in a file numbers.dat and it has the fifteen combinations
> > 2 - 3 - 5 - 7 - 11 - 13
> > ...
> > ...
> > 15 versions
> > Check against the winning numbers
> > 2 - 7 - 23 - 38 - 51 - 53
> > Faster way to check compare string? Compare numbers one by one and check
> > for at least 3
>
> This feels somewhat like homework, so I'll provide suggests instead of
> complete code. Besides, you probably want to write it yourself.
>
> If you're doing this in the shell (/bin/sh), a case statement is a
> surprisingly quick way to test the presence of a value against a list.
>
> Suppose you've got one number in $value. Suppose you have the list to
> compare against in $numbers as a string separated by commas. Then this:
>
> case ",$numbers," in
> ",$value,")
> echo "$value is present in $numbers!"
> ;;
> esac
>
> can be used to check. Since you're counting matches set a counter to 0
> and iterate over the values, and increment the counter once in the case
> statement. Check the counter after the loop.
>
> If you've really got a string like "2 - 3 - 5 - 7 - 11 - 13" it is
> trivial to use " - " as the separator instead of a comma.
>
> You can easily write a shell function to compare a batch of values.
>
> Then you can iterate over the file in numbers.dat looking counting the
> matches for each line:
>
> while read numbers
> do
> ... compare $numbers against your picked numbers ...
> done < numbers.dat
>
> This if-statement:
>
> > If (successful numbers >= 3)
> > Write you have won $3
> > If (successful numbers >= 4)
> > Write you have won $56
> > If (successful numbers >= 5)
> > Write you have won $156
> > If (successful numbers > 5)
> > Write you are a millionaire and have won the jackpot
>
> Is better written as a case statement, testing the count from your
> comparison function.
>
> case $count in
> ......... the various values ...
> 5) echo "156" ;;
> 6) echo "you are a millionaire" ;;
> esac
>
> Cheers,
> Cameron Simpson c...@cskk.id.au
>
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Thank you for your help. This is not a homework problem. It is a time saving
thing, we can check online input the numbers one by one, but there are 15 sets.
It takes time. Having a bash script can do the job, but question is do we get
the winning numbers as integers, or do we compare them as strings?
If we compare numbers (num1 == $num1)
Or [ ] I have problems with the scripts working correctly and getting '('
expected.
I will try to write the script and ask for help if I run into problems.
I have seen pages where there are references with awk, seq and other commands
https://www.unix.com/shell-programming-and-scripting/276553-lottery-number-checker.html
https://www.txlottery.org/export/sites/lottery/Games/Check_Your_Numbers.html
I wanted to use grep command by piping the cat command, but I have dilemma that
if an array is used, the code is cleaner and more efficient.
Best Regards,
Antonio
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