// ------------------------------------------------------------
// Date struct for proper date handling
// ------------------------------------------------------------
function makeDate(year, month, day) {
return { year, month, day };
}
// ------------------------------------------------------------
// print a date in YYYY-MM-DD format
// ------------------------------------------------------------
function formatDate(d) {
return `${d.year.toString().padStart(4, "0")}-${d.month
.toString()
.padStart(2, "0")}-${d.day.toString().padStart(2, "0")}`;
}
// ------------------------------------------------------------
// File entry struct
// ------------------------------------------------------------
function makeFile(name, extension, date, size) {
return {
name, // file name without extension
extension, // extension including dot
date, // real date struct
size // bytes
};
}
// ------------------------------------------------------------
// Sort by name (lexicographically)
// ------------------------------------------------------------
function sortByName(files) {
return [...files].sort((a, b) => a.name.localeCompare(b.name));
}
// ------------------------------------------------------------
// Sort by extension (lexicographically)
// ------------------------------------------------------------
function sortByExtension(files) {
return [...files].sort((a, b) => a.extension.localeCompare(b.extension));
}
// ------------------------------------------------------------
// Sort by date (year → month → day)
// ------------------------------------------------------------
function sortByDate(files) {
return [...files].sort((a, b) => {
if (a.date.year !== b.date.year) return a.date.year - b.date.year;
if (a.date.month !== b.date.month) return a.date.month - b.date.month;
return a.date.day - b.date.day;
});
}
// ------------------------------------------------------------
// Sort by size (ascending)
// ------------------------------------------------------------
function sortBySize(files) {
return [...files].sort((a, b) => a.size - b.size);
}
// ------------------------------------------------------------
// print file list
// ------------------------------------------------------------
function printFiles(files) {
files.forEach(f => {
console.log(`${f.name}${f.extension} ${formatDate(f.date)} ${f.size} bytes`);
});
console.log();
}
// ------------------------------------------------------------
// Main program
// ------------------------------------------------------------
const files = [
makeFile("G1zTo5jJk", ".jpg", makeDate(2007,7,8), 51954),
makeFile("LTEE4SI0j", ".jpg", makeDate(2011,11,13), 43442),
makeFile("PDqmuO3GH", ".cpp", makeDate(2004,5,21), 3346),
makeFile("qJO2qjukZ", ".png", makeDate(2010,8,27), 67087),
makeFile("HqclTqxb4", ".cpp", makeDate(2020,9,5), 70531),
makeFile("imVyTyoaF", ".jpg", makeDate(2011,3,19), 43846),
makeFile("rXwXdy8XO", ".txt", makeDate(2017,10,12), 70193),
makeFile("9Z4fbOBUc", ".pdf", makeDate(2004,6,9), 1754),
makeFile("ZHahuu4vS", ".txt", makeDate(2003,10,10), 65126),
makeFile("0SnZHh2GT", ".png", makeDate(2006,10,18), 25890)
];
console.log("Original:");
printFiles(files);
console.log("Sorted by name:");
printFiles(sortByName(files));
console.log("Sorted by extension:");
printFiles(sortByExtension(files));
console.log("Sorted by date:");
printFiles(sortByDate(files));
console.log("Sorted by size:");
printFiles(sortBySize(files));
/* run:
Original:
G1zTo5jJk.jpg 2007-07-08 51954 bytes
LTEE4SI0j.jpg 2011-11-13 43442 bytes
PDqmuO3GH.cpp 2004-05-21 3346 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
HqclTqxb4.cpp 2020-09-05 70531 bytes
imVyTyoaF.jpg 2011-03-19 43846 bytes
rXwXdy8XO.txt 2017-10-12 70193 bytes
9Z4fbOBUc.pdf 2004-06-09 1754 bytes
ZHahuu4vS.txt 2003-10-10 65126 bytes
0SnZHh2GT.png 2006-10-18 25890 bytes
Sorted by name:
0SnZHh2GT.png 2006-10-18 25890 bytes
9Z4fbOBUc.pdf 2004-06-09 1754 bytes
G1zTo5jJk.jpg 2007-07-08 51954 bytes
HqclTqxb4.cpp 2020-09-05 70531 bytes
imVyTyoaF.jpg 2011-03-19 43846 bytes
LTEE4SI0j.jpg 2011-11-13 43442 bytes
PDqmuO3GH.cpp 2004-05-21 3346 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
rXwXdy8XO.txt 2017-10-12 70193 bytes
ZHahuu4vS.txt 2003-10-10 65126 bytes
Sorted by extension:
PDqmuO3GH.cpp 2004-05-21 3346 bytes
HqclTqxb4.cpp 2020-09-05 70531 bytes
G1zTo5jJk.jpg 2007-07-08 51954 bytes
LTEE4SI0j.jpg 2011-11-13 43442 bytes
imVyTyoaF.jpg 2011-03-19 43846 bytes
9Z4fbOBUc.pdf 2004-06-09 1754 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
0SnZHh2GT.png 2006-10-18 25890 bytes
rXwXdy8XO.txt 2017-10-12 70193 bytes
ZHahuu4vS.txt 2003-10-10 65126 bytes
Sorted by date:
ZHahuu4vS.txt 2003-10-10 65126 bytes
PDqmuO3GH.cpp 2004-05-21 3346 bytes
9Z4fbOBUc.pdf 2004-06-09 1754 bytes
0SnZHh2GT.png 2006-10-18 25890 bytes
G1zTo5jJk.jpg 2007-07-08 51954 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
imVyTyoaF.jpg 2011-03-19 43846 bytes
LTEE4SI0j.jpg 2011-11-13 43442 bytes
rXwXdy8XO.txt 2017-10-12 70193 bytes
HqclTqxb4.cpp 2020-09-05 70531 bytes
Sorted by size:
9Z4fbOBUc.pdf 2004-06-09 1754 bytes
PDqmuO3GH.cpp 2004-05-21 3346 bytes
0SnZHh2GT.png 2006-10-18 25890 bytes
LTEE4SI0j.jpg 2011-11-13 43442 bytes
imVyTyoaF.jpg 2011-03-19 43846 bytes
G1zTo5jJk.jpg 2007-07-08 51954 bytes
ZHahuu4vS.txt 2003-10-10 65126 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
rXwXdy8XO.txt 2017-10-12 70193 bytes
HqclTqxb4.cpp 2020-09-05 70531 bytes
*/
