7
Let us play a little golfing game. Given a single line of N space separated numbers from STDIN, one must output those numbers on N lines.
So far, I came up with the three following bash solutions :
xargs -n1 (9)tr \ \\n (8)fmt -1 (6)Can anyone do better? I am eager to learn new tricks
Brett
Posted 2017-07-06T13:04:27.020
Reputation: 79
0
Bash (22)
read X;printf %d\\n $X (thanks to manatwork but without literal NL)
30 read -aX;printf "%d\n" ${X[*]}
26 read X;echo -e ${X// /\n}
28 printf "%d\n" $(</dev/stdin)
27 printf "%d\n" $(</dev/fd/0)
26 printf %d\n $(</dev/fd/0)
23 read X;printf "%d\n" $X
philcolbourn
Posted 2017-07-06T13:04:27.020
Reputation: 501
1As it says the input will contain just 1 line of numbers, read X;printf '%d ' $X is enough. (Where
is a literal line break.) – manatwork – 2017-07-12T10:33:50.050
7It is frowned upon to limit the language. – Leaky Nun – 2017-07-06T13:04:51.913
1It is also frowned upon to restrict the format of the input and the output. – Leaky Nun – 2017-07-06T13:05:05.713
3Welcome to PPCG. You should perhaps change this to a
tipsquestion. – officialaimm – 2017-07-06T13:07:14.833in bash, I think the minimum is 5, because you will have at least 2 chars for a command (single-char commands are not a thing IMO), a space, and at least 2 chars for an arg. And so I think, you are already 1st in line with
fmt -1. – V. Courtois – 2017-07-06T13:08:57.0571Can the space-separated numbers be input as a string (enclosed with quote symbols)? Can the output lines contain leading spaces with the numbers right-aligned? Can we use functions that take a string and output a string with newlines? – Luis Mendo – 2017-07-06T16:41:26.497
Can I get the the numbers from program arguments? In Tcl:
– sergiol – 2017-07-06T20:13:11.090puts [join $argv \n]— demoYour
trcommand needs an extra space:tr \␣␣\\n(9), nottr \␣\\n(8). – Anders Kaseorg – 2017-07-07T00:44:52.780@V.Courtois 1-byte commands are definitely a thing, and, well, hypothetically, a 1-byte command can do the job... – Erik the Outgolfer – 2017-07-08T13:18:47.510
@ErikTheOutgolfer oh okay, sorry then – V. Courtois – 2017-07-08T18:45:55.057
1bash or shell? all these are shell commands - not part of bash language. – philcolbourn – 2017-07-12T09:51:49.710