Count True

How Much is True?

Challenge Difficulty: Easy | Estimated completion time: ~5 minutes

Create a function which returns the number of true values there are in an array.

Examples

countTrue([true, false, false, true, false]) ➞ 2
 
countTrue([false, false, false, false]) ➞ 0
 
countTrue([]) ➞ 0

Notes

• Return 0 if given an empty array.
• All array items are of the type bool (true or false).

Solution

Python

def count_true(values: list[bool]) -> int: """Count the number of True values in a list. Args: values: List of boolean values Returns: Number of True values """ return sum(values) if __name__ == "__main__": print(count_true([True, False, False, True, False])) # 2 print(count_true([False, False, False, False])) # 0 print(count_true([])) # 0

Output