Hourglass puzzle: Difference between revisions
added AWK
Alextretyak (talk | contribs) (Added 11l) |
Catskill549 (talk | contribs) (added AWK) |
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flipping the remaining sand in the 7 hour glass when the 4 hour glass ends.
</pre>
=={{header|AWK}}==
<lang AWK>
# syntax: GAWK -f HOURGLASS_PUZZLE.AWK
BEGIN {
limit = 100
t4 = 0
while (t4 < limit) {
t7_left = 7 - t4 % 7
if (t7_left == 9 - 4) {
break
}
t4 += 4
}
if (t4 > limit) {
printf("Unable to find an answer within %d iterations\n",limit)
exit(1)
}
str = sprintf("Turn over both hour glasses at the same time and continue flipping them each " \
"when they individually run down until the 4 hour glass is flipped %d times, " \
"wherupon the 7 hour glass is immediately placed on its side with %d minutes " \
"of sand in it. " \
"You can measure 9 minutes by flipping the 4 hour glass once, then " \
"flipping the remaining sand in the 7 hour glass when the 4 hour glass ends.",t4/4,t7_left)
fold(str)
exit(0)
}
function fold(rec, chars_printed,indx,text) {
line_length = 80
while (1) {
indx = match(rec," ")
if (indx == 0) {
printf("%s\n",rec)
break
}
text = substr(rec,1,indx)
printf("%s",text)
rec = substr(rec,RSTART+1)
chars_printed += length(text)
if (chars_printed > line_length) {
printf("\n")
chars_printed = 0
}
}
}
</lang>
{{out}}
<pre>
Turn over both hour glasses at the same time and continue flipping them each when
they individually run down until the 4 hour glass is flipped 4 times, wherupon the
7 hour glass is immediately placed on its side with 5 minutes of sand in it. You
can measure 9 minutes by flipping the 4 hour glass once, then flipping the remaining
sand in the 7 hour glass when the 4 hour glass ends.
</pre>
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