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package stringutil
import "sort"
// StringCount is a struct store count of Key
type StringCount struct {
Key string
Count int
}
// StringCountList is slice of Keycount
type StringCountList []StringCount
func (b StringCountList) Len() int { return len(b) }
func (b StringCountList) Less(i, j int) bool {
// return b[i].Count < b[j].Count
// This will return unwanted result: return b[i].Count < b[j].Count || b[i].Key < b[j].Key
if b[i].Count < b[j].Count {
return true
}
if b[i].Count == b[j].Count {
if b[i].Key < b[j].Key {
return true
}
return false
}
return false
}
func (b StringCountList) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
// ReversedStringCountList is Reversed StringCountList
type ReversedStringCountList struct {
StringCountList
}
// Less is different from the Less of StringCountList
func (b ReversedStringCountList) Less(i, j int) bool {
// return b.StringCountList[i].Count > b.StringCountList[j].Count
if b.StringCountList[i].Count > b.StringCountList[j].Count {
return true
}
if b.StringCountList[i].Count == b.StringCountList[j].Count {
if b.StringCountList[i].Key < b.StringCountList[j].Key {
return true
}
return false
}
return false
}
// CountOfString returns the count of Key for a Key slice
func CountOfString(s []string) map[string]int {
count := make(map[string]int)
for _, b := range s {
count[b]++
}
return count
}
// SortCountOfString sorts count of Key
func SortCountOfString(count map[string]int, reverse bool) StringCountList {
countList := make(StringCountList, len(count))
i := 0
for b, c := range count {
countList[i] = StringCount{b, c}
i++
}
if reverse {
sort.Sort(ReversedStringCountList{countList})
} else {
sort.Sort(countList)
}
return countList
}
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