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重载了getRandomElement 方法, 增加了更加通用的获取多个元素的方法, 同时修改了获取单个元素的getRandomElemnt和获取字符串getRandomString的方法.
一点建议: 相同的逻辑可以抽取公用方法, 方便以后的维护, 例如此方法, 同时被获取一个元素和获取字符串的方法调用, 涉及到方法修改时候, 只需要修改通用的方法即可.
本地已测试过.
又来个老板打工了.
2022.5.6 11:45:30