How to count the Number of Occurrences of Specified Element in the Array in Ruby - Step by Step Examples

How to count the Number of Occurrences of Specified Element in the Array in Ruby ?

Answer

To count the number of occurrences of a specified element in an array in Ruby, you can use methods like count, select, or a loop to iterate through the array and count each occurrence.


✐ Examples

1 Count Occurrences of Element 30 in Integer Array using count method

In this example,

  1. We create an array named numbers with values 10, 20, 30, 40, 30, 50.
  2. We use the count method on the array to count occurrences of element 30.
  3. The count will represent the number of occurrences of element 30.

Ruby Program

numbers = [10, 20, 30, 40, 30, 50]
puts "Number of occurrences of element 30: #{numbers.count(30)}"

Output

Number of occurrences of element 30: 2

2 Count Occurrences of Element 'banana' in String Array using select method

In this example,

  1. We create an array named fruits with values 'apple', 'banana', 'cherry', 'banana'.
  2. We use the select method on the array to select elements equal to 'banana'.
  3. We then use the size method on the selected array to get the count of occurrences of 'banana'.
  4. The count will represent the number of occurrences of element 'banana'.

Ruby Program

fruits = ['apple', 'banana', 'cherry', 'banana']
count = fruits.select { |fruit| fruit == 'banana' }.size
puts "Number of occurrences of element 'banana': #{count}"

Output

Number of occurrences of element 'banana': 2

Summary

In this tutorial, we learned How to count the Number of Occurrences of Specified Element in the Array in Ruby language with well detailed examples.


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