Алгоритм фильтра JavaScript на месте
function filterInPlace(a, condition, thisArg) {
let j = 0;
a.forEach((e, i) => {
if (condition.call(thisArg, e, i, a)) {
if (i!==j) a[j] = e;
j++;
}
});
a.length = j;
return a;
}
a = [ 1,, 3 ];
document.write('<br>[',a,']');
filterInPlace(a, x=>true);
document.write('<br>[',a,'] compaction when nothing changed');
b = [ 1,,3,,5 ];
document.write('<br>[',b,']');
filterInPlace(b, x=>x!==5);
document.write('<br>[',b,'] with 5 removed');
Run code snippet
Outrageous Opossum
