How to find the length of an array using the size method

Overview

In Ruby, one of the ways to get the length of an array is by using the size method. It returns an integer value representing the total number of elements in an array.

Syntax

array.size

Parameters

The size method takes no parameters.

Return value

The value returned is an integer value which is the number of elements an array contains.

Code example

In the code below, we will demonstrate the use of the size method. We created several arrays and got their lengths using the size method.

# create several arrays
arr1 = [1, 2, 3, 4, 5]
arr2 = ["a", "b", "c", "d", "e", "f", "g", "h"]
arr3 = ["FireFox", "Chrome", ]
arr4 = []
arr5 = ["Google", "Meta", "Netflix", "Apple", "Amazon"]
arr6 = ["Java", "Ruby"]
# find the length of arrays
# using the count method
a = arr1.size
b = arr2.size
c = arr3.size
d = arr4.size
e = arr5.size
f = arr6.size
# print the returned values
puts a
puts b
puts c
puts d
puts e
puts f

In the code above, 0 is returned for the length of arr4 simply because it is an empty array.

Free AI Mock Interviews
Coding Interview
Coding PatternsFree Interview
Gain insights and practical experience with coding patterns through targeted MCQs and coding problems, designed to match and challenge your expertise level.
System Design
You TubeFree Interview
Learn to design a video streaming platform like YouTube by tackling functional and non-functional requirements, core components, and high-level to detailed design challenges.

Free Resources

License: Creative Commons-Attribution-ShareAlike 4.0 (CC-BY-SA 4.0)