Question

Basic Programming Unit Test 11 of 2611 of 26 Items Question The happy number can be defined as a number which returns 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 12+32=10→12+02=1 . Number 32 is a happy number because 32+22=13→12+32=10→12+02=1 . Other examples of happy numbers are 7, 28, 100, 320. A number is unhappy if the process yields a 4. Which of the following constructs would we need to find out if a number is happy?(1 point) Responses for loop for loop while loop while loop queue queue list list Skip to navigation page 1 of 1

Answer 1

To determine if a number is a happy number or not, you would typically need to keep track of the numbers you've already encountered to avoid falling into an endless loop. The essential constructs required for this would be:

1. While loop: This will allow you to iteratively calculate the sum of the squares of the digits of the number until you either reach 1 or enter a cycle (which could eventually lead to detecting that it's not a happy number).

2. Queue or List: You would use this to store the numbers you have seen so far. If you encounter a number you've already seen, you can determine that you've entered a cycle and the number is unhappy.

In summary, the necessary constructs would be:

• While loop for iterating the process.
• Queue or List to keep track of previously seen numbers.

So, the most accurate options from the provided responses would be:

• While loop
• List (or Queue)

If you had to choose only one from your choices in the context of determining if a number is happy, the while loop would be the primary means to keep checking the conditions. However, both a list and while loop are important for the complete solution.