Question

/* Given 2 non-negative ints, a and b, return their sum, so long as the sum

* has the same number of digits as a. If the sum has more digits than a,
* just return a without b.
*/
public int sumLimit(int a, int b) {
int sum = a + b;
int aLength = String.valueOf(a).length();
int sumLength = String.valueOf(sum).length();

if(sumLength == aLength)
return sum;

return a;
}

Answer 1

The question involves a programming exercise in Java, where a function calculates the sum of two numbers but only returns the sum if it has the same number of digits as the first number; otherwise, it returns the first number.

Step-by-step explanation:

The student's question pertains to a programming task where a function needs to calculate the sum of two non-negative integers a and b. The condition is that if the sum has more digits than the initial value of integer a, the function should return a without adding b to it. This can be viewed as an exercise in understanding data types, string handling, and conditional logic in computer programming.

The provided example defines a method called sumLimit which has this functionality. It first calculates the sum of a and b, then checks the length of a against the length of the sum. If they have the same number of digits, it returns the sum. Otherwise, it returns a. This is an exercise typically found in Java programming challenges, focusing on control flow and type conversion.