常用类型及数据操作方法
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 

115 lines
2.5 KiB

/*
* string functions
*/
package helper
import (
"errors"
"fmt"
"sort"
)
// 求差集
func Diff(slice1, slice2 []string) []string {
m := make(map[string]int)
nn := make([]string, 0)
inter := Intersect(slice1, slice2)
for _, v := range inter {
m[v]++
}
for _, value := range slice1 {
times, _ := m[value]
if times == 0 {
nn = append(nn, value)
}
}
return nn
}
// 求交集
func Intersect(slice1, slice2 []string) []string {
m := make(map[string]int)
nn := make([]string, 0)
for _, v := range slice1 {
m[v]++
}
for _, v := range slice2 {
times, _ := m[v]
if times == 1 {
nn = append(nn, v)
}
}
return nn
}
// 求并集
func Union(slice1, slice2 []string) []string {
m := make(map[string]int)
for _, v := range slice1 {
m[v]++
}
for _, v := range slice2 {
times, _ := m[v]
if times == 0 {
slice1 = append(slice1, v)
}
}
return slice1
}
func Unique(originals interface{}) (interface{}, error) {
temp := map[string]struct{}{}
switch slice := originals.(type) {
case []string:
result := make([]string, 0, len(originals.([]string)))
for _, item := range slice {
key := fmt.Sprint(item)
if _, ok := temp[key]; !ok {
temp[key] = struct{}{}
result = append(result, item)
}
}
return result, nil
case []int64:
result := make([]int64, 0, len(originals.([]int64)))
for _, item := range slice {
key := fmt.Sprint(item)
if _, ok := temp[key]; !ok {
temp[key] = struct{}{}
result = append(result, item)
}
}
return result, nil
default:
return nil, errors.New(fmt.Sprintf("Unknown type: %T", slice))
}
}
// 将切片字符串(数字型)排序
func StringSliceSort(str []string, sort_type string) ([]string, error) {
int_arr := []int{}
string_arr := []string{}
if len(str) < 1 {
return []string{}, nil
}
for _, val := range str {
int_arr = append(int_arr, ToInt(val))
}
if sort_type == "desc" {
sort.Sort(sort.Reverse(sort.IntSlice(int_arr)))
}else{
sort.Ints(int_arr)
}
for _, val_int := range int_arr {
string_arr = append(string_arr, ToStr(val_int))
}
return string_arr, nil
}