23 lines
431 B
Go
23 lines
431 B
Go
package common
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// Data. Predict: ["4"]
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// a := []string{"1","2","3","4"}
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// b := []string{"0","1","2","3"}
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func GetASliceInt32NotInB(a []int32, b []int32) []int32 {
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var c []int32
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temp := map[int32]struct{}{}
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for _, val := range b {
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if _, ok := temp[val]; !ok {
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temp[val] = struct{}{} // 空struct 不占内存空间
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}
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}
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for _, val := range a {
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if _, ok := temp[val]; !ok {
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c = append(c, val)
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}
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}
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return c
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}
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