##leetcode 194 ```bash row=$(sed -n ‘$=’ file.txt) col=$(awk ‘NR==1{print NF}’ file.txt) awk -v row=$row -v col=$col ‘{ for(i=1;i<=NF;i++)a[NR”-“i]=$i }END{ for(i=1;i<=col;i++){ for(j=1;j<=row;j++) if (j==row){ printf(“%s”,a[j”-“i]); }else{ printf(“%s “,a[j”-“i]); }print “” } }’ file.txt
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Jun 5, 2016