anagram.cs

  public bool isAnagram(string a, string b)
        {
            if(a.Length != b.Length){
                return false;
            }
            //Your code here
            var aDict = new Dictionary<char,int>();
             var bDict = new Dictionary<char,int>();
             var aArr = a.ToCharArray();
             var bArr = b.ToCharArray();
             
            for(int i=0;i<aArr.Length;i++){
                if(aDict.ContainsKey(aArr[i])){
                    aDict[aArr[i]]++;
                }
                else{
                    aDict.Add(aArr[i],1);
                }
                if(bDict.ContainsKey(bArr[i])){
                    bDict[bArr[i]]++;
                }
                else{
                    bDict.Add(bArr[i],1);
                }
            }
            
            foreach (char key in aDict.Keys){
                if(bDict.ContainsKey(key)){
                    if(!(aDict[key]==bDict[key]))
                     return false;
                }
                else{
                    return false;
                }
            }
            return true;
        }