Question

FOR RUBY:

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Create a program named Gifts. This program will describe the gifts for the 12 Days of Christmas.

1. Each day describes one gift only. You cannot explicitly output the list of gifts, you need to get each day to display. For instance, for the 3rd day of Christmas, you display the gift for the 3rd day, then display the gift for the 2nd day, then the gift for the 1st day.
2. Think about the logic for this.. in the song, it counts up from one to 12. For each day starting with day 2, it counts backward to repeat the gifts. (Hint: nested loops)
3. Use number days, not words. For instance, should be 1st, 2nd, 3rd, 4th, etc. You'll have to figure out how to append 1, 2, and 3 with the correct letters, but 4-12 all use 'th'.
4. This is not a long program. You'll need to get it done in under 50 lines, using standard Ruby format. That means indenting, having loop beginning and end on their own lines, etc.
5. Include internal documentation of name, and date.

Output should look similar to: x ---------- Capture Output ---------- > "C:\Ruby25-x64\bin\rubyw.exe" xmas. rb On the 1st day of Christmas my true love gave to me: a partridge in a pear tree On the 2nd day of Christmas my true love gave to me: two turtle doves, and a partridge in a pear tree On the 3rd day of Christmas my true love gave to me: three french hens, two turtle doves, and a partridge in a pear tree

Answer 1

Ans:-

Below is the required code.Here, instead of using nested loops to traverse the gifts backwards from second day onwards, I have used inbuilt array functions for slicing ,reversing and joining.

#the gifts array

Gifts=["twelve drummers drumming","eleven pipers piping","ten lords a leaping","nine ladies dancing","eight maids a milking","seven swans a swimming","six geese a laying","five golden rings","four calling birds","three french hens","two turtle doves","a partidge in a pear tree"].reverse

app=""

#traversing for each day

for i in 0..11

#checking for st,nd,rd or th

if (i+1)==1

p="st"

elsif (i+1)==2

p="nd"

elsif (i+1)==3

p="rd"

else

p="th"

end

gift=Gifts[i]

#forming string of gifts backwards, second day onwards

if i>0

gift=Gifts.slice(1,i).reverse.join(", ")+",and "+Gifts[0]

end

#outputting song line

puts "On the #{i+1}#{p} day of Christmas, my true love gave to me : #{gift}\n"

end

1. #the gifts array 2. Gifts=["twelve drummers drummin g", "eleven pipers piping","ten lor ds a leaping","nine ladies dancin g", "eight maids a milking", "seven swans a swimming", "six geese a lay ing","five golden rings", "four cal ling birds", "three french hens","t wo turtle doves", "a partidge in a pear tree").reverse app="" #traversing for each day for i in 0..11 #checking for st, nd,rd or th if (i+1)== 1 p="st" elsif (i+1)==2 10. p="nd" 11. elsif (i+1)==3 12. p="rd" 13. else 14. p="th" 15. end gift=Gifts[i] 17. #forming string of gifts backwa rds, second day onwards if i>o 19. gift=Gifts.slice(1,i).reve rse.join(", ")+", and "+Gifts[0] 20. end 21. #outputting song line 16.

22. puts "On the #{i+1}#{p} day of Christmas, my true love gave to me : #gift}\n" end 23. Success #stdin #stdout Os 6472KB

On the 1st day of Christmas, my true love gave to me : a partidge in a pe ar tree On the 2nd day of Christmas, my true love gave to me : two turtle doves, a nd a partidge in a pear tree On the 3rd day of Christmas, my true love gave to me: three french hens, two turtle doves, and a partidge in a pear tree On the 4th day of Christmas, my true love gave to me : four calling bird s, three french hens, two turtle dov es, and a partidge in a pear tree On the 5th day of Christmas, my true love gave to me : five golden rings, four calling birds, three french hen s, two turtle doves, and a partidge i n a pear tree On the 6th day of Christmas, my true love gave to me : six geese a layin g, five golden rings, four calling b irds, three french hens, two turtle doves, and a partidge in a pear tree On the 7th day of Christmas, my true love gave to me : seven swans a swim ming, six geese a laying, five golde

n rings, four calling birds, three f rench hens, two turtle doves, and a p artidge in a pear tree On the 8th day of Christmas, my true love gave to me: eight maids a milk ing, seven swans a swimming, six gee se a laying, five golden rings, four calling birds, three french hens, tw o turtle doves, and a partidge in a p ear tree On the 9th day of Christmas, my true love gave to me : nine ladies dancin g, eight maids a milking, seven swan s a swimming, six geese a laying, fi ve golden rings, four calling birds, three french hens, two turtle doves, and a partidge in a pear tree On the 10th day of Christmas, my tru e love gave to me : ten lords a leap ing, nine ladies dancing, eight maid sa milking, seven swans a swimming, six geese a laying, five golden ring s, four calling birds, three french hens, two turtle doves, and a partidg e in a pear tree On the 11th day of Christmas, my tru e love gave to me : eleven pipers pi ping, ten lords a leaping, nine ladi

es dancing, eight maids a milking, s even swans a swimming, six geese a l aying, five golden rings, four calli ng birds, three french hens, two tur tle doves, and a partidge in a pear t ree On the 12th day of Christmas, my tru e love gave to me : twelve drummers drumming, eleven pipers piping, ten lords a leaping, nine ladies dancin g, eight maids a milking, seven swan s a swimming, six geese a laying, fi ve golden rings, four calling birds, three french hens, two turtle doves, and a partidge in a pear tree
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