Skip to content
the poor coder

Hackerrank Ruby Hash - Initialization Solution

Poor Man
Published
Updated
Reading time
1 min read

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

Text
empty_hash = Hash.new
  • Initialize an empty Hash with the variable name default_hash and the default value of every key set to 1.

Hint

Text
default_hash = Hash.new(1)

or

Text
default_hash = Hash.new
default_hash.default = 1

Initialize a hash with the variable name hackerrank and having the key-value pairs

Text
"simmy", 100  
"vivmbbs",200

Hint

Text
hackerrank = {"simmy" => 100, "vivmbbs" => 200}

Hash can be defined using a new method

Text
hackerrank = Hash.new
hackerrank["simmy"] = 100
hackerrank["vivmbbs"] = 200

Solution in ruby#

Approach 1.

Python
# Initialize 3 variables here as explained in the problem statement
empty_hash = {}
default_hash = Hash.new(1)
hackerrank = {"simmy" => 100, "vivmbbs" => 200}

Approach 2.

Python
# Initialize 3 variables here as explained in the problem statement
empty_hash = Hash.new
default_hash = Hash.new(1)
hackerrank = {"simmy" => 100, "vivmbbs" => 200}

Approach 3.

Python
# Initialize 3 variables here as explained in the problem statement
empty_hash = Hash.new
default_hash = Hash.new(1)
hackerrank = {"simmy" => 100, "vivmbbs" => 200}

Keep going

Related posts

ESC