# Ruby Array Exercises: Check whether the sum of all the 3's of an given array of integers is exactly 9

## Ruby Array: Exercise-33 with Solution

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:**

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**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.

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