本文介绍了Javascript:制作一个随机数组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
可能的重复:
生成范围内的唯一编号(0 - X),保留历史记录以防止重复
编写一个生成随机数组的函数,如下所示:
Writing a function that make random array,as I wrote below:
随机数组(10)
=> [0,2,3,9,6,5,4,7,8,1]
=> [0,2,3,9,6,5,4,7,8,1]
:(
我在上学的时候不学习编程,所以我写了一个丑陋的.这是我的程序.
I'm not learning progarming when school days so i wrote a ugly one.Here is my program.
var min = 0,
max = 15, //Here generate an random array from 0-14
i,
j,
arr = [],
temp = [];
for (i = min;i<max; i++){
arr.push(i);
}
for(j=min;j<1000;j++){
temp.push(arr[Math.floor(Math.random() * arr.length)]);
}
function unique(array){
var b = [];
for(var i=0; i<array.length; i++){
if(b.indexOf(array[i]) == -1) b.push(array[i]);
}
return b;
}
alert(unique(temp));
我通过搜索互联网编写了这个程序,我认为它并不完美,它没有算法......
I wrote this program by searching the internet,it's not perfect i think, there is no arithmetic in it...
推荐答案
function randomArray(n) {
var array = [];
for (i = 0; i < n; i++) {
array[i] = i;
}
var newArray = [];
for (i = 0; i < n; i++) {
var num = Math.round(Math.random() * (n - i - 1));
newArray[i] = array[num];
array.splice(num, 1);
}
alert(newArray);
}
randomArray(100);
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