帮助编写函数 [英] Help Writing a Function

问题描述

编写一个名为crazySum的函数，它接受一个数字数组，并返回每个数字的总和乘以其在数组中的位置。



例如，如果你通过[4,8,15,16]，程序将计算4 * 1 + 8 * 2 + 15 * 3 + 16 * 4然后给你回答作为答案。

我是尝试通过采用x（值）和i（放置）然后使用* +来查找总和，但不能提取超过这个值。

这是开始我的解决方案：

Write a function called crazySum that takes an array of numbers, and returns the sum of each number multiplied by its position in the array.

For example, if you pass [4, 8, 15, 16], the program will calculate 4*1 + 8*2 + 15*3 + 16*4 and give you that back as an answer.
I am attempting to work through this by taking an x (value) and i (placement) and then using *+ to find the sum, but can't extract more than just the value.
Here is the beginning of my solution:

var array = [3,2,2];
crazySum = function () {
    i=1
for(var i = 1; i<array.length; i++) {
    return i
}
}
console.log(crazySum[i]+1);

任何帮助或类似查询的链接都非常感谢=）

Any help or links to similar queries is very much appreciated =)

推荐答案

无论你做什么，函数只返回值1.我建议去JavaScript教程 [ ^ ]并完成教程。

Doesn't matter what you do the function will only ever return a value of 1. I would suggest going to JavaScript Tutorial[^] and working through the tutorials.

最后决定将我的评论作为解决方案发布。



请注意，首先，我不熟悉Java，所以请考虑c是我的评论/语法。

a。）我错过了你想要计算/返回的金额

b。）你的for循环似乎错过了第一个元素。

想想这样的事情：

Finally decided to post my comment as a solution.

Please note first, I'm not familar with Java, so take care with my comment/syntax.
a.) I'm missing the sum you like to calculate/return
b.) Your for Loop seems to miss the first element.
Think about somthing like this:

var sum= 0;
for (var i= 0; i< array.length;i++)
{
  sum= sum + (i+1) * Array[i];
}

//此时，sum应具有您所感知的值。

您是否看到了差异？

// At this point, sum should have the value you excpect.
Do you see the differences?

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