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AP Computer Science A/Unit 4: Iteration
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Runtime Comparison of Loop Structures
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Consider the two Java code segments below. Both segments are intended to accomplish the same task, and it is assumed that arr is an int array of size n, where n is a positive integer.

// Segment A
int sum = 0;
for (int i = 0; i < n; i++) {
    sum += arr[i];
}

// Segment B
int sum = 0;
for (int i = 0; i < n; i++) {
    for (int j = 0; j < 1; j++) {
        sum += arr[i];
    }
}

Which statement best compares the runtime efficiency of Segment A and Segment B?

A

Both segments have the same run-time efficiency since they perform the same number of operations

B

Segment B is less efficient because it has quadratic time complexity

C

Segment A is more efficient because it has fewer loop headers to execute

D

Segment B is more efficient because nested loops are always faster

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