从数组中选择随机元素，而无需重复 [英] Pick random elements from an array without repeating

问题描述

我要在单个子画面上显示随机数，并希望对单个容器进行洗牌，使其上没有显示相同的内容.如何在不重复相同颜色的情况下随机随机播放一组精灵?

I'm displaying random numbers on individual sprites and want to shuffle the individual container with the same no displaying on it. how to shuffle a set of sprites randomly without repeating the same color?

我的数组是:

   var color = new Array();
   color[0] = 'greenBox';
   color[1] = 'blueBox';
   color[2] = 'purpleBox';
   color[3] = 'yellowBox';
   color[4] = 'redBox';
   color[5] = 'whiteBox';
   color[6] = 'pinkBox';

推荐答案

如果以后不再需要该数组，则可以执行以下操作:

If you don't need the array later, you could do something like this:

var color = [
    "greenBox",
    "blueBox",
    ...
];

while (color.length != 0) {
    var index = Math.floor(Math.random()*color.length);
    var pickedColor = color[index];
    colors.splice(index, 1);  // This removes the picked element from the array
    doStuffWith(pickedColor);
}

这会破坏数组，但永远不会两次选择相同的元素

This will destroy the array, but it will never pick the same element twice

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