find the average of a set of numbers, assuming that most of the numbers are between 30 and 50, and how many numbers are invalid numbers such as 10p88 and 90, how about Filter?
just give the algorithm idea or reference.
find the average of a set of numbers, assuming that most of the numbers are between 30 and 50, and how many numbers are invalid numbers such as 10p88 and 90, how about Filter?
just give the algorithm idea or reference.
refer to this https://blog.csdn.net/yuxeaot., I wonder if it is correct
.function filterOutliers(someArray) {
// Copy the values, rather than operating on references to existing values
var values = someArray.concat();
// Then sort
values.sort( function(a, b) {
return a - b;
});
/* Then find a generous IQR. This is generous because if (values.length / 4)
* is not an int, then really you should average the two elements on either
* side to find q1.
*/
var q1 = values[Math.floor((values.length / 4))];
// Likewise for q3.
var q3 = values[Math.ceil((values.length * (3 / 4)))];
var iqr = q3 - q1;
// Then find min and max values
var maxValue = q3 + iqr*1.5;
var minValue = q1 - iqr*1.5;
// Then filter anything beyond or beneath these values.
var filteredValues = values.filter(function(x) {
return (x <= maxValue) && (x >= minValue);
});
// Then return
return filteredValues;
}traverses, recording the sum and the number of significant numbers
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