3.8 KiB
3.8 KiB
title | id | challengeType |
---|---|---|
Convert seconds to compound duration | 596fd036dc1ab896c5db98b1 | 5 |
Description
- takes a positive integer representing a duration in seconds as input (e.g.,
100
), and - returns a string which shows the same duration decomposed into weeks, days, hours, minutes, and seconds as detailed below (e.g.,
1 min, 40 sec
).
Test Cases
Input number | Output number |
---|---|
7259 | 2 hr, 59 sec |
728640059 | 1 d |
6000000 | 9 wk, 6 d, 10 hr, 40 min |
Details
-
The following five units should be used:
Unit Suffix used in Output Conversion week wk
1 week = 7 days day d
1 day = 24 hours hour hr
1 hour = 60 minutes minute min
1 minute = 60 seconds second sec
--- -
However, only include quantities with non-zero values in the output (e.g., return
1 d
and not0 wk, 1 d, 0 hr, 0 min, 0 sec
). -
Give larger units precedence over smaller ones as much as possible (e.g., return
2 min, 10 sec
and not1 min, 70 sec
or130 sec
). - Mimic the formatting shown in the test-cases (quantities sorted from largest unit to smallest and separated by comma+space; value and unit of each quantity separated by space).
Instructions
Tests
tests:
- text: <code>convertSeconds</code> is a function.
testString: assert(typeof convertSeconds === 'function', '<code>convertSeconds</code> is a function.');
- text: <code>convertSeconds(7259)</code> should return <code>2 hr, 59 sec</code>.
testString: assert.equal(convertSeconds(testCases[0]), results[0], '<code>convertSeconds(7259)</code> should return <code>2 hr, 59 sec</code>.');
- text: <code>convertSeconds(86400)</code> should return <code>1 d</code>.
testString: assert.equal(convertSeconds(testCases[1]), results[1], '<code>convertSeconds(86400)</code> should return <code>1 d</code>.');
- text: <code>convertSeconds(6000000)</code> should return <code>9 wk, 6 d, 10 hr, 40 min</code>.
testString: assert.equal(convertSeconds(testCases[2]), results[2], '<code>convertSeconds(6000000)</code> should return <code>9 wk, 6 d, 10 hr, 40 min</code>.');
Challenge Seed
function convertSeconds(sec) {
// Good luck!
return true;
}
After Test
const testCases = [7259, 86400, 6000000];
const results = ['2 hr, 59 sec', '1 d', '9 wk, 6 d, 10 hr, 40 min'];
Solution
function convertSeconds(sec) {
const localNames = ['wk', 'd', 'hr', 'min', 'sec'];
// compoundDuration :: [String] -> Int -> String
const compoundDuration = (labels, intSeconds) =>
weekParts(intSeconds)
.map((v, i) => [v, labels[i]])
.reduce((a, x) =>
a.concat(x[0] ? [`${x[0]} ${x[1] || '?'}`] : []), []
)
.join(', ');
// weekParts :: Int -> [Int]
const weekParts = intSeconds => [0, 7, 24, 60, 60]
.reduceRight((a, x) => {
const r = a.rem;
const mod = x !== 0 ? r % x : r;
return {
rem: (r - mod) / (x || 1),
parts: [mod].concat(a.parts)
};
}, {
rem: intSeconds,
parts: []
})
.parts;
return compoundDuration(localNames, sec);
}