Hash#key() is a Hash class method which gives the key value corresponding to the value. If value doesn’t exist then return nil.
Parameter: Hash values
Return: key corresponding to the value
nil – If value doesn’t exist
Example #1 :
Hash a key form : b Hash b key form : a Hash c key form :
Example #2 :
Hash a key form : b Hash b key form : a Hash c key form : b
Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.