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package main import ("fmt") func main() { arr1 := [6]int{9, 10, 11, 12, 13, 14} // 数组 myslice1 := arr1[1:5] // 切片数组 fmt.Printf("myslice1 = %v\n", myslice1) fmt.Printf("length = %d\n", len(myslice1)) fmt.Printf("capacity = %d\n", cap(myslice1)) myslice1 = arr1[1:3] // 通过重新切片数组来改变长度 fmt.Printf("myslice1 = %v\n", myslice1) fmt.Printf("length = %d\n", len(myslice1)) fmt.Printf("capacity = %d\n", cap(myslice1)) myslice1 = append(myslice1, 20, 21, 22, 23) // 通过追加元素来改变长度 fmt.Printf("myslice1 = %v\n", myslice1) fmt.Printf("length = %d\n", len(myslice1)) fmt.Printf("capacity = %d\n", cap(myslice1)) }