Reformat Date.
Given a date string in the form Day Month Year, where:
Day is in the set {"1st", "2nd", "3rd", "4th", ..., "30th", "31st"}.Month is in the set {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}.Year is in the range [1900, 2100].Convert the date string to the format YYYY-MM-DD, where:
YYYY denotes the 4 digit year.MM denotes the 2 digit month.DD denotes the 2 digit day.Example 1:
Input: date = "20th Oct 2052"
Output: "2052-10-20"
Example 2:
Input: date = "6th Jun 1933"
Output: "1933-06-06"
Example 3:
Input: date = "26th May 1960"
Output: "1960-05-26"
Constraints:
The given dates are guaranteed to be valid, so no error handling is necessary.
My solution:
/**
* @param {string} date
* @return {string}
*/
var reformatDate = function(date) {
let dateAry = date.split(" ");
let day = dateAry[0].match(/[0-9]+/gi)[0];
day = day.padStart(2, '0');
let month = '';
switch(dateAry[1]) {
case 'Jan': {
month = '01';
break;
}
case "Feb": {
month = '02';
break;
}
case 'Mar': {
month = '03';
break;
}
case 'Apr': {
month = '04';
break;
}
case 'May': {
month = '05';
break;
}
case 'Jun': {
month = '06';
break;
}
case 'Jul': {
month = '07';
break;
}
case 'Aug': {
month = '08';
break;
}
case 'Sep': {
month = '09';
break;
}
case 'Oct': {
month = '10';
break;
}
case 'Nov': {
month = '11';
break;
}
default: {
month = '12';
break;
}
}
let year = dateAry[2];
return `${year}-${month}-${day}`;
};