2.4 KiB
2.4 KiB
title | id | challengeType |
---|---|---|
Day of the week | 5966f99c45e8976909a85575 | 5 |
Description
Instructions
Tests
tests:
- text: <code>findXmasSunday</code> is a function.
testString: assert(typeof findXmasSunday === 'function', '<code>findXmasSunday</code> is a function.');
- text: <code>findChristmasSunday(2000, 2100)</code> should return an array.
testString: assert(typeof findXmasSunday(2000, 2100) === 'object', '<code>findChristmasSunday(2000, 2100)</code> should return an array.');
- text: <code>findChristmasSunday(2008, 2121</code> should return [1977, 1983, 1988, 1994, 2005, 2011, 2016]
testString: assert.deepEqual(findXmasSunday(1970, 2017), firstSolution, '<code>findChristmasSunday(2008, 2121</code> should return [1977, 1983, 1988, 1994, 2005, 2011, 2016]');
- text: <code>findChristmasSunday(2008, 2121</code> should return [2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067, 2072, 2078, 2089, 2095, 2101, 2107, 2112, 2118]
testString: assert.deepEqual(findXmasSunday(2008, 2121), secondSolution, '<code>findChristmasSunday(2008, 2121</code> should return [2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067, 2072, 2078, 2089, 2095, 2101, 2107, 2112, 2118]');
Challenge Seed
function findXmasSunday(start, end) {
// Good luck!
return true;
}
After Test
const firstSolution = [1977, 1983, 1988, 1994, 2005, 2011, 2016];
const secondSolution = [2011, 2016, 2022, 2033, 2039, 2044, 2050, 2061, 2067, 2072, 2078, 2089, 2095, 2101, 2107, 2112, 2118];
Solution
function findXmasSunday(start, end) {
const xmasSunday = [];
for (let year = start; year <= end; year++) {
const xmas = new Date(year, 11, 25);
if (xmas.getDay() === 0) {
xmasSunday.push(year);
}
}
return xmasSunday;
}