Golang编程实现删除字符串中出现次数最少字符的方法

package huawei
import (
    "fmt"
)
func Test4Base() {
    s := "abcfbcca"
    result := deleteMinChars(s)
    fmt.Println(result)
}
func deleteMinChars(s string) string {
    countMap := make(map[rune]int, 0)
    //统计出现次数
    for _, v := range s {
        countMap[v]++
    }
    //查找最少次数
    var minCount int
    for _, v := range countMap {
        if minCount == 0 || v < minCount {
            minCount = v
        }
    }
    //删除字符串中出现次数为minCount的字符
    for i := len(s) - 1; i >= 0; i-- {
        if countMap[rune(s[i])] == minCount {
            s = s[:i] + s[i+1:]
        }
    }
    return s
}