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- Prepare
- Ruby
- Arrays & Hashes
- Ruby Hash - Initialization
Ruby Hash - Initialization
Ruby Hash - Initialization
Hashes, also called associative arrays, are dictionary-like data structures which are similar to arrays. Instead of using integers to index an object, however, hashes use any object as its index.
In this challenge, your task is to create three different Hash
collections as explained below.
- Initialize an empty Hash with the variable name
empty_hash
Hint
empty_hash = Hash.new
- Initialize an empty Hash with the variable name
default_hash
and the default value of every key set to1
.
Hint
default_hash = Hash.new(1)
or
default_hash = Hash.new
default_hash.default = 1
Initialize a hash with the variable name
hackerrank
and having the key-value pairs"simmy", 100 "vivmbbs",200
Hint
hackerrank = {"simmy" => 100, "vivmbbs" => 200}
Hash can be defined using a new
method
hackerrank = Hash.new
hackerrank["simmy"] = 100
hackerrank["vivmbbs"] = 200