How to get the Index of Specified Element in an Array in Ruby - Step by Step Examples

How to get the Index of Specified Element in an Array in Ruby ?

Answer

To get the index of a specified element in an array in Ruby, you can use the index method or find_index method.


✐ Examples

1 Index of Element 30 in Integer Array using index method

In this example,

  1. We create an integer array named arr with values 10, 20, 30, 40, 50.
  2. We use the index method to find the index of element 30 in the array.
  3. The index method returns the index of the first occurrence of the element, or nil if the element is not found.

Ruby Program

arr = [10, 20, 30, 40, 50]
index = arr.index(30)
puts "Index of element 30 is: #{index}"

Output

Index of element 30 is: 2

2 Index of Element 60 in Integer Array using find_index method

In this example,

  1. We create an integer array named arr with values 10, 20, 30, 40, 50.
  2. We use the find_index method to find the index of element 60 in the array.
  3. The find_index method returns the index of the first occurrence of the element, or nil if the element is not found.

Ruby Program

arr = [10, 20, 30, 40, 50]
index = arr.find_index(60)
puts "Index of element 60 is: #{index || 'Element not found'}"

Output

Index of element 60 is: Element not found

Summary

In this tutorial, we learned How to get the Index of Specified Element in an Array in Ruby language with well detailed examples.


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