Raindrops

Instructions

Your task is to convert a number into a string that contains raindrop sounds corresponding to certain potential factors. A factor is a number that evenly divides into another number, leaving no remainder. The simplest way to test if one number is a factor of another is to use the modulo operation.

The rules of raindrops are that if a given number:

• has 3 as a factor, add 'Pling' to the result.
• has 5 as a factor, add 'Plang' to the result.
• has 7 as a factor, add 'Plong' to the result.
• does not have any of 3, 5, or 7 as a factor, the result should be the digits of the number.

Examples

• 28 has 7 as a factor, but not 3 or 5, so the result would be "Plong".
• 30 has both 3 and 5 as factors, but not 7, so the result would be "PlingPlang".
• 34 is not factored by 3, 5, or 7, so the result would be "34".

jq Tips

The if-then-else expression will be helpful in this exercise.

One thing to note: the version of jq used in this track is 1.6. In this version, the else clause is required.

An example:

8, 12
| if . < 10
    then "\(.) is less than ten"
    else "\(.) is more than ten"
  end

outputs

"8 is less than ten"
"12 is more than ten"

But

8, 12
| if . < 10 then "\(.) is less than ten" end

outputs

jq: error: syntax error, unexpected end (Unix shell quoting issues?) at <top-level>, line 2:
| if . < 10 then "\(.) is less than ten" end
jq: error: Possibly unterminated 'if' statement at <top-level>, line 2:
| if . < 10 then "\(.) is less than ten" end
jq: 2 compile errors

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Source

A variation on FizzBuzz, a famous technical interview question that is intended to weed out potential candidates. That question is itself derived from Fizz Buzz, a popular children's game for teaching division.