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Get the date of the Nth day of week after the Xth day of week in a given year and month

Introduction

In the United States, national elections are normally held on the first Tuesday after the first Monday in November.

Challenge

Write a program that takes a Year as integer, and a pair of (day of week as character and ordinal as integer) and output the date as "yyyy-mm-dd" Remember, the second pair is after the first pair. use this for inspiration: https://codegolf.stackexchange.com/questions/178227/get-the-date-of-the-nth-day-of-week-in-a-given-year-and-month[][1]

Example Input and Output

Example input:

2021 November Tuesday 1 Monday 1
2020 November Tuesday 1 Monday 1
2020 December Friday 2 Wednesday 1
2019 April Wednesday 1 Friday 1
2023 February Tuesday 4 Wednesday 1
2023 February Wednesday 5 Thursday 1
2022 December Sunday 5 Sunday 55

Expected output:

"2021年11月02日"
"2020年11月03日"
"2020年12月11日"
"2019年04月10日"
"2023年02月28日"
"NA"
"NA"

Note: the output indicated as "NA" could be any negative finding such as null, but not an error. [1]: Get the date of the nth day of week in a given year and month

Answer*

# JavaScript, <s>102</s> <s>93</s> <s>91</s> <s>88</s> <s>80</s> <s>78</s> 77 bytes

Oof, this made my brain itch. Possibly still some room for improvement.



 (m,t,x=0)=>g=w=>(d=new Date(...m,++x)).getDay()-w[0]||--w[1]?g(w):w!=t?g(t):d

[Try it online!](https://tio.run/##jY7BisIwEEDv@xXuLYPTkKT2oBBl11bsxRXFvdSCxcayi7aiwSj47zWhxyWwpzcwjzfzW9yK6/7yc9ZB3ZSqPciWnFDjXTKQ40oaOSalrJXpxYVWhFJ6wn7/DkArpePiQSAwGcufz8CS55OKGBiZd6ntpGFUtvumvjZHRY9NRQ4kE0xw5CzHTCDPgWTcAd7@auzfGrdahMJpoUfjQwytFXaxyBdze3dy4GnttvVmsV4m03SWJnHvM5l/fKdfm9XOHwsxcrGB76To/medZmEJ7Qs)

Call with `f([y,m],[W,O])([w,o])`, where:
- `y` is the year,
- `m` is the 0-indexed month,
- `W` is the 0-indexed target weekday (`0`=Sunday),
- `O` is the ordinal of `W`,
- `w` is the 0-indexed starting weekday, and,
- `o` is the ordinal of `w`

**EDIT:** Looking at the rest of the solutions coming in, they seem to be interpreting the I/O requirements of the spec a _lot_ more strictly than I am. After a few read-throughs, I'm not seeing that strictness, nor would it be reasonable to assume it's that strict. Still, though, seeing as I appear to be the only one taking the requirements _this_ loosely, I'll take a stab at an alternative solution on Tuesday. (It's a bank holiday weekend in Ireland)

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…Try to optimize your score. For instance, answers to code-golf challenges should attempt to be as short as possible. You can always include a readable version of the code in addition to the competitive one. Explanations of your answer make it more interesting to read and are very much encouraged.
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\$\begingroup\$ Based on the last two test cases, if the calculated date exceeds the input year+month, it should output NA. But maybe it's good to verify with OP whether this is optional or mandatory, since just calculating beyond the current year+month works perfectly fine for larger input. 🤷 \$\endgroup\$

Kevin Cruijssen
– Kevin Cruijssen

2023年02月02日 17:02:56 +00:00
Commented Feb 2, 2023 at 17:02
1

\$\begingroup\$ Hopefully, "undefined behaviour" is sufficient in those cases, @KevinCruijssen. \$\endgroup\$

Shaggy
– Shaggy

2023年02月02日 17:11:28 +00:00
Commented Feb 2, 2023 at 17:11

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