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array.go
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array.go
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package util
import (
"fmt"
"sort"
"strings"
)
// ArrayReverseInt64 int64 array reverse
func ArrayReverseInt64(a []int64) {
for i, j := 0, len(a)-1; i < j; i, j = i+1, j-1 {
a[i], a[j] = a[j], a[i]
}
}
// ArrayReverseString stirng array reverse
func ArrayReverseString(a []string) {
for i, j := 0, len(a)-1; i < j; i, j = i+1, j-1 {
a[i], a[j] = a[j], a[i]
}
}
// ArrayJoinInt join int array
func ArrayJoinInt(a []int, sep string) string {
str := ""
for _, i := range a {
str += fmt.Sprintf("%d%s", i, sep)
}
str = strings.Trim(str, sep)
return str
}
// ArrayJoinUint32 join uint32 array
func ArrayJoinUint32(a []uint32, sep string) string {
str := ""
for _, i := range a {
str += fmt.Sprintf("%d%s", i, sep)
}
str = strings.Trim(str, sep)
return str
}
// ArrayDistinctInt array distinct
func ArrayDistinctInt(src []int) []int {
dst := make([]int, 0)
for _, s := range src {
flag := false
for _, d := range dst {
if s == d {
flag = true
break
}
}
if !flag {
dst = append(dst, s)
}
}
return dst
}
// ArraySortAscInt sort int array asc
func ArraySortAscInt(src []int) {
sort.Slice(src, func(i int, j int) bool {
if src[i] < src[j] {
return true
} else {
return false
}
})
}
// ArraySortDescInt sort int array desc
func ArraySortDescInt(src []int) {
sort.Slice(src, func(i int, j int) bool {
if src[i] > src[j] {
return true
} else {
return false
}
})
}
// ArrayContainsString string contains
func ArrayContainsString(a []string, e string) bool {
for _, s := range a {
if s == e {
return true
}
}
return false
}
// ArrayUnionString string union
func ArrayUnionString(a []string, b []string) []string {
t := make([]string, 0)
for _, s := range a {
if !ArrayContainsString(t, s) {
t = append(t, s)
}
}
for _, s := range b {
if !ArrayContainsString(t, s) {
t = append(t, s)
}
}
return t
}
// ArrayIntersectString string intersect
func ArrayIntersectString(a []string, b []string) []string {
t := make([]string, 0)
for _, s := range a {
if ArrayContainsString(b, s) {
t = append(t, s)
}
}
return t
}
// ArraySymDiffString symmetric difference
func ArraySymDiffString(a []string, b []string) []string {
t := make([]string, 0)
c := make([]string, len(b))
copy(c, b)
for _, s := range a {
var flag bool
var j int
for i := 0; i < len(c); i++ {
if s == c[i] {
flag = true
j = i
break
}
}
if flag {
if j+1 < len(c) {
c = append(c[:j], c[j+1:]...)
} else {
c = c[:j]
}
} else {
t = append(t, s)
}
}
t = append(t, c...)
return t
}