修改持久化的顺序
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@@ -15,7 +15,7 @@ type randMod struct {
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// RandomAll 按权重随机选取 N 个不重复的元素
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func (m *randMod) RandomAll(data map[int]int, n int) []int {
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if n > len(data) {
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return nil
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n = len(data)
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}
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rand.Seed(time.Now().UnixNano())
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// 复制权重映射,避免修改原始数据
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