1.Golang 删除 slice 中重复的值
代码语言：javascript复制package main
import (
"fmt"
)
func main() {
a := []int{2, 1, 2, 5, 6, 3, 4, 5, 2, 3, 9}
UniqueSlice(&a)
fmt.Println(a)
}
func UniqueSlice(slice *[]int) {
found := make(map[int]bool)
total := 0
for i, val := range *slice {
if _, ok := found[val]; !ok {
found[val] = true
(*slice)[total] = (*slice)[i]
total
}
}
*slice = (*slice)[:total]
}
func UniqueSlice_2(slice *[]string) {
found := make(map[string]bool)
total := 0
for i, val := range *slice {
if _, ok := found[val]; !ok {
found[val] = true
(*slice)[total] = (*slice)[i]
total
}
}
*slice = (*slice)[:total]
}
func UniqueSlice_3(slice *[]int) []int {
found := make(map[int]bool)
result := []int{}
for _, val := range *slice {
if _, ok := found[val]; !ok {
found[val] = true
result = append(result, val)
}
}
return result
}2.另外一种
代码语言：javascript复制package main
import (
"fmt"
)
func main() {
a := []int{2, 1, 2, 5, 6, 3, 4, 5, 2, 3, 9}
z := Rm_duplicate(&a)
fmt.Println(z)
}
func Rm_duplicate(list *[]int) []int {
var x []int = []int{}
for _, i := range *list {
if len(x) == 0 {
x = append(x, i)
} else {
for k, v := range x {
if i == v {
break
}
if k == len(x)-1 {
x = append(x, i)
}
}
}
}
return x
}3.GO语言字符串数组去重、去空
代码语言：javascript复制package main
import(
"fmt"
"sort"
)
func RemoveDuplicatesAndEmpty(a []string) (ret []string){
a_len := len(a)
for i:=0; i < a_len; i {
if (i > 0 && a[i-1] == a[i]) || len(a[i])==0{
continue;
}
ret = append(ret, a[i])
}
return
}
func main(){
a := []string{"hello", "", "world", "yes", "hello", "nihao", "shijie", "hello", "yes", "nihao","good"}
sort.Strings(a)
fmt.Println(a)
fmt.Println(RemoveDuplicatesAndEmpty(a))
}
