main.go

// sliceの重複要素を削除
func slimSlice(slice []int) []int {
	m := make(map[int]int)
	slim := make([]int, 0)
	for _, element := range slice {
		if _, ok := m[element]; !ok {
			m[element] = 0
			slim = append(slim, element)
		}
	}
	return slim
}