#include <algorithm>
#include <iomanip>
#include <iostream>
#include <string>
#include <tuple>
#include <vector>
// ------------------------------------------------------------
// Date struct for proper date handling
// ------------------------------------------------------------
struct Date {
int year;
int month;
int day;
};
// ------------------------------------------------------------
// File entry struct
// ------------------------------------------------------------
struct FileEntry {
std::string name; // file name without extension
std::string extension; // extension including dot
Date date; // real date struct
int size; // bytes
};
// ------------------------------------------------------------
// Helper: print a date in YYYY-MM-DD format
// ------------------------------------------------------------
std::string formatDate(const Date& d) {
char buffer[11];
std::snprintf(buffer, sizeof(buffer), "%04d-%02d-%02d", d.year, d.month, d.day);
return buffer;
}
// ------------------------------------------------------------
// Sort by name (lexicographically)
// ------------------------------------------------------------
void sortByName(std::vector<FileEntry>& files) {
std::sort(files.begin(), files.end(),
[](const FileEntry& a, const FileEntry& b) {
return a.name < b.name;
});
}
// ------------------------------------------------------------
// Sort by extension (lexicographically)
// ------------------------------------------------------------
void sortByExtension(std::vector<FileEntry>& files) {
std::sort(files.begin(), files.end(),
[](const FileEntry& a, const FileEntry& b) {
return a.extension < b.extension;
});
}
// ------------------------------------------------------------
// Sort by date (year → month → day)
// ------------------------------------------------------------
void sortByDate(std::vector<FileEntry>& files) {
std::sort(files.begin(), files.end(),
[](const FileEntry& a, const FileEntry& b) {
return std::tie(a.date.year, a.date.month, a.date.day) <
std::tie(b.date.year, b.date.month, b.date.day);
});
}
// ------------------------------------------------------------
// Sort by size (ascending)
// ------------------------------------------------------------
void sortBySize(std::vector<FileEntry>& files) {
std::sort(files.begin(), files.end(),
[](const FileEntry& a, const FileEntry& b) {
return a.size < b.size;
});
}
// ------------------------------------------------------------
// Helper: print file list
// ------------------------------------------------------------
void printFiles(const std::vector<FileEntry>& files) {
for (const auto& f : files) {
std::cout << f.name << f.extension << " "
<< formatDate(f.date) << " "
<< f.size << " bytes\n";
}
std::cout << "\n";
}
int main() {
std::vector<FileEntry> files = {
{"G1zTo5jJk", ".jpg", {2007, 7, 8}, 51954},
{"LTEE4SI0j", ".jpg", {2011, 11, 13}, 43442},
{"PDqmuO3GH", ".cpp", {2004, 5, 21}, 3346},
{"qJO2qjukZ", ".png", {2010, 8, 27}, 67087},
{"HqclTqxb4", ".cpp", {2020, 9, 5}, 70531},
{"imVyTyoaF", ".jpg", {2011, 3, 19}, 43846},
{"rXwXdy8XO", ".txt", {2017, 10, 12}, 70193},
{"9Z4fbOBUc", ".pdf", {2004, 6, 9}, 1754},
{"ZHahuu4vS", ".txt", {2003, 10, 10}, 65126},
{"0SnZHh2GT", ".png", {2006, 10, 18}, 25890}
};
std::cout << "Original:\n";
printFiles(files);
std::cout << "Sorted by name:\n";
sortByName(files);
printFiles(files);
std::cout << "Sorted by extension:\n";
sortByExtension(files);
printFiles(files);
std::cout << "Sorted by date:\n";
sortByDate(files);
printFiles(files);
std::cout << "Sorted by size:\n";
sortBySize(files);
printFiles(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
LTEE4SI0j.jpg 2011-11-13 43442 bytes
PDqmuO3GH.cpp 2004-05-21 3346 bytes
ZHahuu4vS.txt 2003-10-10 65126 bytes
imVyTyoaF.jpg 2011-03-19 43846 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
rXwXdy8XO.txt 2017-10-12 70193 bytes
Sorted by extension:
HqclTqxb4.cpp 2020-09-05 70531 bytes
PDqmuO3GH.cpp 2004-05-21 3346 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
0SnZHh2GT.png 2006-10-18 25890 bytes
qJO2qjukZ.png 2010-08-27 67087 bytes
ZHahuu4vS.txt 2003-10-10 65126 bytes
rXwXdy8XO.txt 2017-10-12 70193 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
*/
