如何解决数组中元素的总和和平均值?
let obj=[
profesor[
{
prof1:name:"Joe",surname:"Don",personalNo:12334
prof2:name:"Mike",surname:"Kruz",personalNo:54835
}
]
{
sudent1:name:"Stive" grade:10 exam:"Theory",prof1:"Joe"
sudent2:name:"Tony" grade:8 exam:"Theory",prof2:"Mike"
sudent3:name:"Jane" grade:7 exam:"Theory",prof2:"Mike"
sudent4:name:"Shone" grade:6 exam:"Theory",prof1:"Joe"
sudent5:name:"Anny" grade:8 exam:"Theory",prof1:"Joe"
sudent6:name:"Anny" grade:10 exam:"Theory",prof1:"Joe"
sudent7:name:"Tony" grade:8 exam:"Theory",prof2:"Mike"
sudent8:name:"Jane" grade:7 exam:"Theory",prof2:"Mike"
sudent8:name:"Shone" grade:9 exam:"Theory",prof1:"Joe"
sudent10:name:"Anny" grade:8 exam:"Theory",prof1:"Joe
}
]
var teor = this._instruktori[0];
var nizTeor=0;
this._instruktori.forEach((elem)=> {
var teorF=teorija.filter((elem) => elem.profesor.personalNo)
.map((elem ) => elem.grade )
.reduce((p,el,i,niz)=>(p+el)/niz.length,0);
}
我需要计算每位教授学生的平均成绩。我的代码看起来像这样,但它是计算所有成绩的平均值。
我需要结果 prof1:他学生的平均成绩是 8,5 prof2:他学生的平均成绩是 7.5
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