Ruby | Array collect() operation

Ruby | Array count() operation

Last Updated : 08 Jan, 2020

Array#count() : count() is a Array class method which returns the number of elements in the array. It can also find the total number of a particular element in the array.

Syntax:  Array.count()

Parameter:  obj - specific element to found

Return:  removes all the nil values from the array.

Code #1 : Example for count() method

Ruby

# Ruby code for count() method
# to count elements

# declaring array
a = [18, 22, 33, nil, 5, 6]

# declaring array
b = [1, 4, 1, 1, 88, 9]

# declaring array
c = [18, 22, nil, nil, 50, 6]

# counting total elements
puts "counting : #{a.count}\n\n"

# counting 1
puts "counting : #{b.count(1)}\n\n"

# counting 'nil'
puts "counting : #{c.count(nil)}\n\n"

Output :

counting : 6

counting : 3

counting : 2

Code #2 : Example for count() method

Ruby

# Ruby code for count() method
# to count elements

# declaring array
a = ["abc", "nil", "dog"]

# declaring array
b = ["cow", nil, "dog"]

# declaring array
c = ["cat", nil, nil]

# counting total elements
puts "counting : #{a.count}\n\n"

# counting 1
puts "counting : #{b.count(1)}\n\n"

# counting 'nil'
puts "counting : #{c.count(nil)}\n\n"

Output :

counting: 3

counting : 0

counting : 2

Ruby | Array collect() operation

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