Insertion into hashtable using [] = operator

#1

sir how to insert as h[“Apple”] = 120
I am not understand

#2

For operator overloading in hash maps [ ] , There can be two cases -:

  1. The key exist . So if the key exist , we return the original box - which has the value .
    Suppose ,If the key value pair (Mango , 80) already exist in hash table. And if we do h[“Mango”] = 100 . So , h[“Mango”] returns the value by reference.
  2. The key does not exist . So the key is created using insert function having key value as (key , garbage ) . Now that same key is searched in hash-map where it is created and the value is returned as reference . now this value is replaced by assignment = 120 .
    The statement can be elaborated as -
    h.operator - This returns the value of key apple by reference , and this is assigned as 120.
#3

Hey Chandan, as you are not responding to this thread, I am marking your doubt as Resolved for now. Re-open it if required.