Ruby Array Exercises: Check whether the sum of all the 3's of an given array of integers is exactly 9
Write a Ruby program to check whether the sum of all the 3's of an given array of integers is exactly 9.

Ruby Code:
def check_array(nums)
sum = 0
i = 0
while i < nums.length
if(nums[i] == 3)
sum += 3
end
i += 1
end
return (sum == 9);
end
print check_array([3, 5, 3, 3]),"\n"
print check_array([3, 3, 2, 1]),"\n"
print check_array([3, 3, 3, 3]),"\n"
Output:
true false false
Flowchart:

Ruby Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a Ruby program to compute the sum of the numbers of an given array except the number 17 and numbers that come immediately after a 17. Return 0 for an empty array.
Next: Write a Ruby program to check whether the number of 2's is greater than the number of 5's of a given array of integers.
What is the difficulty level of this exercise?
- Weekly Trends and Language Statistics
- Weekly Trends and Language Statistics