环境
- Time 2022-08-23
- Go 1.19
前言
说明
参考：https://gobyexample.com/slices
目标
使用 Go 语言的切片类型。
新建切片类型
package main
import "fmt"
func main() {
slice := make([]string, 3)
fmt.Println("emp:", slice)
}
修改和获取元素
package main
import "fmt"
func main() {
slice := make([]string, 3)
fmt.Println("emp:", slice)
slice[0] = "a"
slice[1] = "b"
slice[2] = "c"
fmt.Println("set:", slice)
fmt.Println("get:", slice[2])
}
获取长度
package main
import "fmt"
func main() {
slice := make([]string, 3)
fmt.Println("emp:", slice)
slice[0] = "a"
slice[1] = "b"
slice[2] = "c"
fmt.Println("len:", len(slice))
}
追加元素
package main
import "fmt"
func main() {
slice := make([]string, 3)
fmt.Println("emp:", slice)
slice[0] = "a"
slice[1] = "b"
slice[2] = "c"
fmt.Println("len:", len(slice))
slice = append(slice, "d")
slice = append(slice, "e", "f")
fmt.Println("apd:", slice)
}
切片拷贝
package main
import "fmt"
func main() {
slice := make([]string, 3)
slice[0] = "a"
slice[1] = "b"
slice[2] = "c"
slice = append(slice, "d")
slice = append(slice, "e", "f")
dst := make([]string, len(slice))
copy(dst, slice)
fmt.Println("cpy:", dst)
}
截取
package main
import "fmt"
func main() {
slice := make([]string, 3)
slice[0] = "a"
slice[1] = "b"
slice[2] = "c"
slice = append(slice, "d")
slice = append(slice, "e", "f")
l := slice[2:5]
fmt.Println("sl1:", l)
// 从头开始
l = slice[:5]
fmt.Println("sl2:", l)
// 直到末尾
l = slice[2:]
fmt.Println("sl3:", l)
}
新建并初始化切片
package main
import "fmt"
func main() {
t := []string{"g", "h", "i"}
fmt.Println("dcl:", t)
}
二维切片
package main
import "fmt"
func main() {
twoD := make([][]int, 3)
for i := 0; i < 3; i++ {
innerLen := i + 1
twoD[i] = make([]int, innerLen)
for j := 0; j < innerLen; j++ {
twoD[i][j] = i + j
}
}
fmt.Println("2d: ", twoD)
}
总结
使用 Go 语言的切片类型。