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 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"
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Output :
counting : 6 counting : 3 counting : 2
Code #2 : Example for count() method
# 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"
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Output :
counting: 3 counting : 0 counting : 2