切片删除元素

package main

import "fmt"

func removeElem(s []int, elem int) []int {
    out := s[:0]

    for _, val := range s {
        if val != elem {
            out = append(out, val)
        }
    }

    return out
}

func deleteElem(s []int, elem int) []int {
    size := len(s)
    for i := 0; i < size; i++ {
        if s[i] == elem {
            s = append(s[:i], s[i+1:]...)
            i--
            size--
        }
    }
    return s[:size]
}

func main() {
    s := []int{1, 2, 3, 4, 5, 6, 6, 1}
    elem := 6

    fmt.Println("remove elem before:", s)
    s1 := removeElem(s, elem)
    fmt.Println("remove elem after:", s1)

    s = []int{1, 2, 3, 4, 5, 6, 6, 1}
    elem = 1
    fmt.Println("delete elem before:", s)
    s2 := deleteElem(s, elem)
    fmt.Println("delete elem after", s2)
}