javascript - 如何使用 JavaScript 将值随机添加到数组

Question

我是 JavaScript 的新手，我正在执行一项任务，我必须在 12 个负载之间随机分散输入值。另一方面是数组的每个元素与下一个元素的差异不能超过一个。

例如，如果我有 30 头 Camel ，我需要将此数量分配给 12 头 Camel 。到目前为止，我已经编写了下面的代码，但我正在按照要求使用 TextPad，我不确定如何在同一行上打印出结果。

var amount = 30;

var camels = [0,0,0,0,0,0,0,0,0,0,0,0]

var div = amount/12;

var mod = amount%12;

var x = mod / 12;


for(i=0;i<camels.length;i++){
    WScript.echo(camels[i] + "|" + Math.floor(div) + "|" + mod + "|" + x)
}

如果您需要更多信息，请发表评论，谢谢

Answer 1

这是我的看法。请注意，对于声明数组值不能与下一个值相差超过一个的要求，我认为数组是循环的，即最后一个值之后的值再次成为第一个值。

var amount = 30;
var camels = [0,0,0,0,0,0,0,0,0,0,0,0];

while (amount > 0) {
    var index = Math.floor(Math.random() * camels.length);
    var previous = (camels.length + index - 1) % camels.length;
    var next = (index + 1) % camels.length;

    if (Math.abs(camels[index] + 1 - camels[previous]) <= 1
        && Math.abs(camels[index] + 1 - camels[next]) <= 1) {

        camels[index]++;
        amount--;
    }
}

更新

应 OP 的要求，这是一个带注释的版本:

// the amount that needs to be distributed among the camels
var amount = 30;

// the actual values for all 12 camels, initially all zero
var camels = [0,0,0,0,0,0,0,0,0,0,0,0];

// as long as we have something to distribute
while (amount > 0) {

    // get a random current index in the array, i.e. a value between 0 and 11
    var index = Math.floor(Math.random() * camels.length);

    // calculate the index previous to the current index;
    // in case the current index is 0, the previous index will be 11
    var previous = (camels.length + index - 1) % camels.length;

    // calculate the index next to the current index;
    // in case the current index is 11, the next index will be 0
    var next = (index + 1) % camels.length;

    // if adding 1 to the camel at the current index makes it so that
    //     the difference with the camel at the previous index is 1 or lower
    //     the difference with the camel at the next index is 1 or lower
    if (Math.abs(camels[index] + 1 - camels[previous]) <= 1
        && Math.abs(camels[index] + 1 - camels[next]) <= 1) {

        // go ahead and add 1 to that camel
        camels[index]++;

        // and decrement the amount accordingly
        amount--;
    }
}