Homework & Coursework Questions

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1. The problem statement, all variables and given/known data:
Hi there.

i have created a program that in the end it will give output like this

Code:

1   2   3   4   5
10  9   8   7   6
11  12  13  14  15
..............  17

i wonder how to save the output into a single string and into a file.
i.e 1 10 11 12 9 2 3 8 13 14 7 4 5 6 15 17 (in this order, its like a snake)

i googled it but i only came across with saving it row by row (1 2 3 4 5 10 9......)

any idea how?


2. Relevant commands, code, scripts, algorithms:

Code:

file4="temp.txt"
name4=$(cat $file4)
echo $name4 |  sed 's/\(.\)/\1\n/g' > file4.txt

echo "enter how many rows :"
read cols

IFS=$'\n' a=($(cat file4.txt))
for j in $(seq ${#a[*]}); do
    [[ ${a[$j-1]} = $name ]] && echo "${a[$i]}"
done

for (( i=0; i<=$(( ${#a[@]} / cols )); ++i )); do
    for (( j=0; j<cols; ++j )); do
        if (( i%2 )); then idx=$(( (i + 1) / 2 * 2 * cols - j - 1 ))
        else idx=$(( (i / 2) * 2 * cols + j )); fi
        printf "%-4s  " "${a[idx]}"
    done
    printf "\n"
done

3. The attempts at a solution (include all code and scripts):



4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):


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