11 lines
306 B
JavaScript
11 lines
306 B
JavaScript
// single-sided
|
|
Array.prototype.simpleSMA=function(N) {
|
|
return this.map(function(x,i,v) {
|
|
if(i<N-1) return NaN;
|
|
return v.filter(function(x2,i2) { return i2<=i && i2>i-N; }).reduce(function(a,b){ return a+b; })/N;
|
|
}); };
|
|
|
|
g=[1,2,3,4,5,8,5,4];
|
|
console.log(g.simpleSMA(3))
|
|
console.log(g.simpleSMA(5))
|