image.png
package main
import (
"fmt"
)
func main(){
nums := [...]int{2, 3, 1, 0, 2, 5, 3}
m := make(map[int]int)
for _,v := range nums {
_,ok := m[v]
if (ok){
fmt.Println("找到了 ---",v)
}else{
m[v] = 1;
}
}
}
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