题解 | #无重复数组#
无重复数组
https://www.nowcoder.com/practice/d2fa3632268b41df9bc417b74802ad8c
在某两个数范围内的随机数公式：Math.random() * (end - 1) + start
indexOf判断是否有重复
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<script>
const _getUniqueNums = (start, end, n) => {
// 补全代码
let arr = []
for (var i = 0; i < n; i++) {
let ran = Math.floor(Math.random() * (end - 1) + start)
if(arr.indexOf(ran) == -1){
arr.push(ran)
}
}
}
</script>
</body>
</html>
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