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22 lines
558 B
22 lines
558 B
package cap3
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func Ex26(n int) []int {
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lights := make([]bool, n)
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// 默认值false，实际上意味着第一个人已经把所有灯关了，没必要再操作一遍
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// 第i个人，从第二个人开始
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for i := 2; i <= n; i++ {
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// 编号为i的倍数的灯状态取反
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for j := 1; i*j <= n; j++ {
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lights[i*j-1] = !lights[i*j-1]
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}
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}
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result := make([]int, 0, n)
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for light, on := range lights {
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if on {
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result = append(result, light+1)
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}
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}
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return result
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}
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