Home » Ruby Tutorial » Ruby Programs

Ruby program to get key based on value from the hash collection

Last Updated : December 15, 2025

Problem Solution

In this program, we will create a hash collection. Then we will get the key based on the specified value using the key() method.

Program/Source Code

The source code to get key based on value from the hash collection is given below. The given program is compiled and executed on Windows 10 Operating System successfully.

# Ruby program to get key based on value
# from hash collection

student = {"101" => "Amit", "102" => "Arun", "103" => "Sumit"};

key = student.key("Amit");

print "Key: ",key;

Output

Key: 101

Explanation

In the above program, we created a hash collection to store student information. Then we get the key based on the specified value using the key() method and printed the returned key. It returns nil if no matching value is found.

Ruby Hashes Programs »