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feat: catch up on fcc dailies
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Naomi Carrigan
2025-11-27 14:33:54 -08:00
parent a50c19990f
commit 6bd6acdfce
6 changed files with 380 additions and 0 deletions
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src/freecodecamp/daily/2025-11-25/main.spec.ts
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/**
* @copyright NHCarrigan
* @license Naomi's Public License
* @author Naomi Carrigan
*/
import { describe, it, expect } from "vitest";
import { fizzBuzz } from "./main.js";
describe("fizzBuzz", () => {
it("should return the correct FizzBuzz array", () => {
expect(fizzBuzz(2)).toStrictEqual([ 1, 2 ]);
expect(fizzBuzz(4)).toStrictEqual([ 1, 2, "Fizz", 4 ]);
expect(fizzBuzz(8)).
toStrictEqual([ 1, 2, "Fizz", 4, "Buzz", "Fizz", 7, 8 ]);
expect(fizzBuzz(20)).toStrictEqual([
1,
2,
"Fizz",
4,
"Buzz",
"Fizz",
7,
8,
"Fizz",
"Buzz",
11,
"Fizz",
13,
14,
"FizzBuzz",
16,
17,
"Fizz",
19,
"Buzz",
]);
expect(fizzBuzz(50)).toStrictEqual([
1,
2,
"Fizz",
4,
"Buzz",
"Fizz",
7,
8,
"Fizz",
"Buzz",
11,
"Fizz",
13,
14,
"FizzBuzz",
16,
17,
"Fizz",
19,
"Buzz",
"Fizz",
22,
23,
"Fizz",
"Buzz",
26,
"Fizz",
28,
29,
"FizzBuzz",
31,
32,
"Fizz",
34,
"Buzz",
"Fizz",
37,
38,
"Fizz",
"Buzz",
41,
"Fizz",
43,
44,
"FizzBuzz",
46,
47,
"Fizz",
49,
"Buzz",
]);
});
});
src/freecodecamp/daily/2025-11-25/main.ts
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/**
* @copyright NHCarrigan
* @license Naomi's Public License
* @author Naomi Carrigan
*/
const getString = (number: number): string | number => {
if (number % 3 === 0 && number % 5 === 0) {
return "FizzBuzz";
}
if (number % 3 === 0) {
return "Fizz";
}
if (number % 5 === 0) {
return "Buzz";
}
return number;
};
/**
* Given an integer (n), return an array of integers from 1 to n (inclusive), replacing numbers that are multiple of.
* @param n - The integer to generate the FizzBuzz array for.
* @returns An array of integers from 1 to n (inclusive), replacing numbers that are multiple of 3 with "Fizz", numbers that are multiple of 5 with "Buzz", and numbers that are multiple of both 3 and 5 with "FizzBuzz".
* @see https://www.freecodecamp.org/learn/daily-coding-challenge/2025-11-25
*/
export const fizzBuzz = (
n: number,
): Array<string | number> => {
return Array.from({ length: n }, (_, index) => {
return getString(index + 1);
});
};
src/freecodecamp/daily/2025-11-26/main.spec.ts
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/**
* @copyright NHCarrigan
* @license Naomi's Public License
* @author Naomi Carrigan
*/
import { describe, it, expect } from "vitest";
import { isFizzBuzz } from "./main.js";
describe("isFizzBuzz", () => {
it("should return the correct result", () => {
expect(isFizzBuzz([ 1, 2, "Fizz", 4 ])).toBe(true);
expect(isFizzBuzz([ 1, 2, 3, 4 ])).toBe(false);
expect(isFizzBuzz([ 1, 2, "Fizz", 4, "Buzz", 7 ])).toBe(false);
expect(
isFizzBuzz([
1,
2,
"Fizz",
4,
"Buzz",
"Fizz",
7,
8,
"Fizz",
"Buzz",
11,
"Fizz",
13,
"FizzBuzz",
]),
).toBe(false);
expect(
isFizzBuzz([
1,
2,
"Fizz",
4,
"Buzz",
"Fizz",
7,
8,
"Fizz",
"Buzz",
11,
"Fizz",
13,
"Fizz",
]),
).toBe(false);
expect(
isFizzBuzz([
1,
2,
"Fizz",
4,
"Buzz",
"Fizz",
7,
8,
"Fizz",
"Buzz",
11,
"Fizz",
13,
"Buzz",
]),
).toBe(false);
expect(
isFizzBuzz([
1,
2,
"Fizz",
4,
"Buzz",
"Fizz",
7,
8,
"Fizz",
"Buzz",
11,
"Fizz",
13,
14,
"FizzBuzz",
16,
17,
"Fizz",
19,
"Buzz",
"Fizz",
22,
23,
"Fizz",
"Buzz",
26,
"Fizz",
28,
29,
"FizzBuzz",
31,
32,
"Fizz",
34,
"Buzz",
"Fizz",
37,
38,
"Fizz",
"Buzz",
41,
"Fizz",
43,
44,
"FizzBuzz",
46,
47,
"Fizz",
49,
"Buzz",
]),
).toBe(true);
});
});
src/freecodecamp/daily/2025-11-26/main.ts
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/**
* @copyright NHCarrigan
* @license Naomi's Public License
* @author Naomi Carrigan
*/
const getString = (number: number): string | number => {
if (number % 3 === 0 && number % 5 === 0) {
return "FizzBuzz";
}
if (number % 3 === 0) {
return "Fizz";
}
if (number % 5 === 0) {
return "Buzz";
}
return number;
};
/**
* Given an array, determine if it is a correct FizzBuzz sequence from 1 to the last item in the array.
* @param array - The array to check if it is a correct FizzBuzz sequence.
* @returns True if the array is a correct FizzBuzz sequence, false otherwise.
* @see https://www.freecodecamp.org/learn/daily-coding-challenge/2025-11-26
*/
export const isFizzBuzz = (
array: Array<string | number>,
): boolean => {
return array.every((item, index) => {
return item === getString(index + 1);
});
};
src/freecodecamp/daily/2025-11-27/main.spec.ts
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/**
* @copyright NHCarrigan
* @license Naomi's Public License
* @author Naomi Carrigan
*/
/**
* 1. CalculateAge("2000-11-20") should return 25.
* 2. CalculateAge("2000-12-01") should return 24.
* 3. CalculateAge("2014-10-25") should return 11.
* 4. CalculateAge("1994-01-06") should return 31.
* 5. CalculateAge("1994-12-14") should return 30.
*/
import { describe, it, expect } from "vitest";
import { calculateAge } from "./main.js";
describe("calculateAge", () => {
it("should return the correct result", () => {
expect(calculateAge("2000-11-20")).toBe(25);
expect(calculateAge("2000-12-01")).toBe(24);
expect(calculateAge("2014-10-25")).toBe(11);
expect(calculateAge("1994-01-06")).toBe(31);
expect(calculateAge("1994-12-14")).toBe(30);
});
it("should throw an error if the birthday date is invalid", () => {
expect(() => {
return calculateAge("");
}).toThrow(TypeError);
expect(() => {
return calculateAge("2000");
}).toThrow(TypeError);
expect(() => {
return calculateAge("2000-11");
}).toThrow(TypeError);
expect(() => {
return calculateAge("a-11-11");
}).toThrow(TypeError);
expect(() => {
return calculateAge("11-b-11");
}).toThrow(TypeError);
expect(() => {
return calculateAge("11-11-c");
}).toThrow(TypeError);
expect(() => {
return calculateAge("11-11-11-dfjdalkjfs");
}).toThrow(TypeError);
});
});
src/freecodecamp/daily/2025-11-27/main.ts
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/**
* @copyright NHCarrigan
* @license Naomi's Public License
* @author Naomi Carrigan
*/
/**
* Given the date of someone's birthday in the format YYYY-MM-DD, return the person's age as of November 27th, 2025.
* @param birthday - The date of someone's birthday in the format YYYY-MM-DD.
* @returns The person's age as of November 27th, 2025.
* @throws {TypeError} If the birthday date is invalid.
* @see https://www.freecodecamp.org/learn/daily-coding-challenge/2025-11-27
*/
export const calculateAge = (birthday: string): number => {
const [ year, month, day ] = birthday.split("-").map(Number);
if (
year === undefined
|| month === undefined
|| day === undefined
|| Number.isNaN(year)
|| Number.isNaN(month)
|| Number.isNaN(day)
) {
throw new TypeError("Invalid birthday date");
}
const parsed = new Date(`${birthday}T00:00:00Z`);
if (
Number.isNaN(parsed.getTime())
|| parsed.getUTCFullYear() !== year
|| parsed.getUTCMonth() + 1 !== month
|| parsed.getUTCDate() !== day
) {
throw new TypeError("Invalid birthday date");
}
const referenceYear = 2025;
const referenceMonth = 11;
const referenceDay = 27;
const isLaterMonth = month > referenceMonth;
const isSameMonth = month === referenceMonth;
const isLaterDay = day > referenceDay;
const isLaterDayInSameMonth = isSameMonth && isLaterDay;
const hasUpcomingBirthday = isLaterMonth || isLaterDayInSameMonth;
const birthdayAdjustment = hasUpcomingBirthday
? 1
: 0;
return referenceYear - year - birthdayAdjustment;
};