Let me exemplify.
Input:
I have a 2 dimension array:
arr = [['13.12', 'www.randomLinkHere.com'], ['13.6', 'www.randomLinkHere.com'], ['13.2', 'www.randomLinkHere.com']]
And I want to sort them based on the first column => arr[i][0].
But when I sort them using the simple comparison function (a - b), it returns something like:
output: [['13.12', 'www.randomLinkHere.com'], ['13.2', 'www.randomLinkHere.com'], ['13.6', 'www.randomLinkHere.com']]
But the expected result must be:
expected 'version sorted': [['13.2', 'www.randomLinkHere.com'], ['13.6', 'www.randomLinkHere.com'], ['13.12', 'www.randomLinkHere.com']]
Like it was an object.
Reference: Expected result as reference
const arr = [
['13.12', 'www.randomLinkHere.com'],
['13.6', 'www.randomLinkHere.com'],
['13.2', 'www.randomLinkHere.com'],
];
const sortArr = (arr) => {
return arr.sort((a, b) => {
if (+a[0] > +b[0]) return 1;
return 0;
}).reverse();
};
console.log(sortArr(arr));A version that should allow somewhat arbitrary lengths of version numbers:
const arr = [
["13.12", "www.randomLinkHere.com"],
["13.6", "www.randomLinkHere.com"],
["13.2", "www.randomLinkHere.com"],
["14.1", "www.randomLinkHere.com"],
["13.110", "www.randomLinkHere.com"],
["13.11.3", "www.randomLinkHere.com"],
["13.1090.3", "www.randomLinkHere.com"],
];
const compare_versions = (a, b) => {
const a_parts = a.split('.');
const b_parts = b.split('.');
for(let i = 0; i < Math.max(a_parts.length, b_parts.length); i++) {
let comp = +(a_parts[i] ?? 0) - +(b_parts[i] ?? 0);
if(comp !== 0) return comp;
}
return 0;
};
const sortedArr = arr.sort(([a], [b]) => compare_versions(a, b));
console.log(sortedArr);const arr = [
["13.12", "www.randomLinkHere.com"],
["14.1", "www.randomLinkHere.com"],
["15.1", "www.randomLinkHere.com"],
["15.3", "www.randomLinkHere.com"],
["16.2", "www.randomLinkHere.com"],
["13.2", "www.randomLinkHere.com"],
["13.13", "www.randomLinkHere.com"],
["13.113", "www.randomLinkHere.com"],
["1.2", "www.randomLinkHere.com"],
["2.2", "www.randomLinkHere.com"],
["125.2", "www.randomLinkHere.com"],
];
const sortedArr = arr.sort(
(a, b) =>
a[0].split(".").reduce((acc, val) => acc * 10000 + parseFloat(val), 0) -
b[0].split(".").reduce((acc, val) => acc * 10000 + parseFloat(val), 0)
);
console.log(sortedArr);