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Input [num] FilteredMedian [num]
Variable
FilteredMedian
= topQuartilMedian(
Input
[
num
])
Function
function topQuartilMedian(history) {
	return computeMedian(topQuartil(history);
}

function topQuartil(history) { return history.sort().slice(history.length * 0.75, history.length) }

function computeMedian(a) { var low = 0; var high = a.length - 1; var median = (low + high) / 2; do { if (high <= low) { return a[median]; } if (high == low + 1) { if (a[low] > a[high]) { swap(a, low, high); } return a[median]; } var middle = (low + high) / 2; if (a[middle] > a[high]) { swap(a, middle, high); } if (a[low] > a[high]) { swap(a, low, high); } if (a[middle] > a[low]) { swap(a, middle, low); } swap(a, middle, low + 1); var ll = low + 1; var hh = high; do { do { ll++; } while (a[low] > a[ll]); do { hh--; } while (a[hh] > a[low]); if (hh < ll) { break; } swap(a, ll, hh); } while (true); swap(a, low, hh); if (hh <= median) { low = ll; } if (hh >= median) { high = hh - 1; } } while (true); }

private static void swap(a, i1, i2) { var temp = a[i1]; a[i1] = a[i2]; a[i2] = temp; }

  • @export: topQuartilMedian(HISTORY_NUMBER) -> NUMBER
DemoKB
filteredMedian2
filteredMedian2