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Forming the nearest time using current time in JavaScript
Problem
We are required to write a JavaScript function that takes in a string, time, that represents time in the "HH:MM" form.
Our function is supposed to form the next closest time by reusing the current digits. There is no limit on how many times a digit can be reused.
For example, if the input to the function is
Input
const time = '19:34';
Output
const output = '19:39';
Output Explanation
The next closest time choosing from digits 1, 9, 3, 4, is 19:39, which occurs 5 minutes later. It is not 19:33, because this occurs 23 hours and 59 minutes later.
Example
Following is the code −
const time = '19:34';
const findClosestTime = (time = '') => {
const [a, b, c, d] = [time[0], time[1], time[3], time[4]].map(x =>Number(x));
const sorted = [a, b, c, d].sort((x, y) => x - y)
const d2 = sorted.find(x => x > d)
if (d2 > d) {
return `${a}${b}:${c}${d2}`
}
const c2 = sorted.find(x => x > c && x <= 5)
const min = Math.min(a, b, c, d)
if (c2 > c) {
return `${a}${b}:${c2}${min}`
}
const b2 = sorted.find(x => x > b && a * 10 + x <= 24)
if (b2 > b) {
return `${a}${b2}:${min}${min}`
}
const a2 = sorted.find(x => x > a && x <= 2)
if (a2 > a) {
return `${a2}${min}:${min}${min}`
}
return `${min}${min}:${min}${min}`
};
console.log(findClosestTime(time));Output
19:39
Updated on: 24-Apr-2021
336 Views
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