2022-01-30

hashmap确定出现几次
Go版本

import (
    "strings"
)
func uncommonFromSentences(s1 string, s2 string) []string {
        s:=s1+" "+s2;
   hashmap:=make(map[string]int);
 arr:=strings.Split(s," ");
 for i:=0;i<len(arr);i++{
  hashmap[arr[i]]++;
 }
 res:=[]string{};
 for key:=range hashmap{
     if hashmap[key]==1{
   res=append(res,key);
     }
 }
 return res;
      
      }