[Go語言] 檢查元素是否在切片或陣列裡

package main

import (
      "fmt"
)

func main() {
      // initialize a slice of int
      slice := []int{2, 3, 5, 7, 11, 13}

      // save the items of slice in map
      m := make(map[int]bool)
      for i := 0; i < len(slice); i++ {
              m[slice[i]] = true
      }

      // check if 5 is in slice by checking map
      if _, ok := m[5]; ok {
              fmt.Println("5 is in slice")
      } else {
              fmt.Println("5 is not in slice")
      }

      // check if 6 is in slice by checking map
      if _, ok := m[6]; ok {
              fmt.Println("6 is in slice")
      } else {
              fmt.Println("6 is not in slice")
      }
}