如何使用此代码添加缺失的数字，并且仅在 angular 7 中的变量为 0 时执行此操作

Question

What this functionality does is that for each priority it will rebalance the percentage (Participacion) in equal parts. The problem occurs in odd cases, for example when there are 3 priorities(Prioridad), you must divide 100 / 3, which gives a result of 33 (and 33 + 33 + 33 = 99 )

What should I add to my code, so that when the result of the division is not 100, the missing numbers are added to the last position, completing the 100.

Example problem 1: Example gif : The idea is that the last 33 that you see in the gif is automatically transformed into a 34.Tthis is the code i have so far:

rebalance(){
    this.beneficiarios = this.beneficiarios.sort((a, b) =>Number(a.Prioridad) - Number(b.Prioridad)).map((val, i, beneficiarios) => {
      const priorityLenght = this.beneficiarios.filter((a) =>
      Number(a.Prioridad) == Number(val.Prioridad)).map((b) =>
      Number(b.Participacion)).length
        const arrObj = {
          ...val,
          Participacion : 100 / priorityLenght
        }
        return arrObj;
      })
  }

Problem 2: In the previous gif you can see that when you press the button, the rebalancing was done for all the priorities (Prioridad), I would like it to be only for those that contain a 0 in percentage (Participacion)

I'm pretty sure that both problems can be solved by adding a couple lines of code to the function I put above, but I lack experience to know what to do

Here a StackBlizz of the proyect: https://stackblitz.com/edit/create-a-basic-angular-component-v8k1hs?file=src/app/example/user.component.ts

Answer 1

I fixed your algorithm. Really just needed a slightly different approach. I changed it to use Math.floor() for participation and then got the diff (100 % length) needed to make the value 100% and added that to the last value. Here is the updated stackblitz.

https://stackblitz.com/edit/create-a-basic-angular-component-7vj1rr?file=src/app/example/user.component.html

PS: never make method calls in the template due to the overhead the this add each time change detection runs; instead use pure pipes or calculate their value for presentation when the data changes. There was a decimal formatting method being called that I removed.