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第 33 题：如何去掉一组整型数组重复的值？

 2 years ago
source link: https://segmentfault.com/a/1190000040582129
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利用 ES6 新增的数据结构 Set 实现

let arr = [20, 28, 28, 30, 28, 50, 40];
let res = [...new Set(arr)];

console.log(res); // [20, 28, 30, 50, 40]

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